Home / 7,547.28-10,414.68-4,189.78

Finding the Fourth Proportional to 7,547.28, 10,414.68 and 4,189.78

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Solution

The fourth proportional to 7,547.28, 10,414.68 and 4,189.78 is: 5,781.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,547.28 : 10,414.68 = 4,189.78 : x
  2. Step 2: Convert to fraction form
    7,547.28/10,414.68 = 4,189.78/x
  3. Step 3: Cross multiply
    7,547.28x = 10,414.68 × 4,189.78
  4. Step 4: Simplify right side
    7,547.28x = 43,635,217.97
  5. Step 5: Solve for x
    x = 43,635,217.97/7,547.28
  6. Step 6: Final answer
    x = 5,781.58

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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.