Home / 3,715.28-5,122.68-2,389.04

Finding the Fourth Proportional to 3,715.28, 5,122.68 and 2,389.04

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Solution

The fourth proportional to 3,715.28, 5,122.68 and 2,389.04 is: 3,294.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.28 : 5,122.68 = 2,389.04 : x
  2. Step 2: Convert to fraction form
    3,715.28/5,122.68 = 2,389.04/x
  3. Step 3: Cross multiply
    3,715.28x = 5,122.68 × 2,389.04
  4. Step 4: Simplify right side
    3,715.28x = 12,238,287.43
  5. Step 5: Solve for x
    x = 12,238,287.43/3,715.28
  6. Step 6: Final answer
    x = 3,294.04

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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.