Home / 4,089.76-5,643.84-2,226.76

Finding the Fourth Proportional to 4,089.76, 5,643.84 and 2,226.76

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Solution

The fourth proportional to 4,089.76, 5,643.84 and 2,226.76 is: 3,072.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,089.76 : 5,643.84 = 2,226.76 : x
  2. Step 2: Convert to fraction form
    4,089.76/5,643.84 = 2,226.76/x
  3. Step 3: Cross multiply
    4,089.76x = 5,643.84 × 2,226.76
  4. Step 4: Simplify right side
    4,089.76x = 12,567,477.16
  5. Step 5: Solve for x
    x = 12,567,477.16/4,089.76
  6. Step 6: Final answer
    x = 3,072.91

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Find fourth proportional to 2,044.88, 2,821.92 and 1,113.38
Half scale
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Double scale
Find fourth proportional to 4,090.76, 5,645.22 and 2,227.76
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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.