Home / 7,414.22-10,220.72-5,642.76

Finding the Fourth Proportional to 7,414.22, 10,220.72 and 5,642.76

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Solution

The fourth proportional to 7,414.22, 10,220.72 and 5,642.76 is: 7,778.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,414.22 : 10,220.72 = 5,642.76 : x
  2. Step 2: Convert to fraction form
    7,414.22/10,220.72 = 5,642.76/x
  3. Step 3: Cross multiply
    7,414.22x = 10,220.72 × 5,642.76
  4. Step 4: Simplify right side
    7,414.22x = 57,673,069.99
  5. Step 5: Solve for x
    x = 57,673,069.99/7,414.22
  6. Step 6: Final answer
    x = 7,778.71

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Find fourth proportional to 3,707.11, 5,110.36 and 2,821.38
Half scale
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Double scale
Find fourth proportional to 7,415.22, 10,222.10 and 5,643.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.