Home / 8,513.28-11,719.20-7,387.62

Finding the Fourth Proportional to 8,513.28, 11,719.20 and 7,387.62

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Solution

The fourth proportional to 8,513.28, 11,719.20 and 7,387.62 is: 10,169.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,513.28 : 11,719.20 = 7,387.62 : x
  2. Step 2: Convert to fraction form
    8,513.28/11,719.20 = 7,387.62/x
  3. Step 3: Cross multiply
    8,513.28x = 11,719.20 × 7,387.62
  4. Step 4: Simplify right side
    8,513.28x = 86,576,996.30
  5. Step 5: Solve for x
    x = 86,576,996.30/8,513.28
  6. Step 6: Final answer
    x = 10,169.64

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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.