Home / 5,665.28-7,817.68-3,147.24

Finding the Fourth Proportional to 5,665.28, 7,817.68 and 3,147.24

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Solution

The fourth proportional to 5,665.28, 7,817.68 and 3,147.24 is: 4,342.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,665.28 : 7,817.68 = 3,147.24 : x
  2. Step 2: Convert to fraction form
    5,665.28/7,817.68 = 3,147.24/x
  3. Step 3: Cross multiply
    5,665.28x = 7,817.68 × 3,147.24
  4. Step 4: Simplify right side
    5,665.28x = 24,604,115.20
  5. Step 5: Solve for x
    x = 24,604,115.20/5,665.28
  6. Step 6: Final answer
    x = 4,342.97

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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.