Home / 7,484.74-10,329.54-4,128.20

Finding the Fourth Proportional to 7,484.74, 10,329.54 and 4,128.20

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Solution

The fourth proportional to 7,484.74, 10,329.54 and 4,128.20 is: 5,697.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,484.74 : 10,329.54 = 4,128.20 : x
  2. Step 2: Convert to fraction form
    7,484.74/10,329.54 = 4,128.20/x
  3. Step 3: Cross multiply
    7,484.74x = 10,329.54 × 4,128.20
  4. Step 4: Simplify right side
    7,484.74x = 42,642,407.03
  5. Step 5: Solve for x
    x = 42,642,407.03/7,484.74
  6. Step 6: Final answer
    x = 5,697.25

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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.