Home / 5,248.28-7,242.68-2,890.43

Finding the Fourth Proportional to 5,248.28, 7,242.68 and 2,890.43

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Solution

The fourth proportional to 5,248.28, 7,242.68 and 2,890.43 is: 3,988.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,248.28 : 7,242.68 = 2,890.43 : x
  2. Step 2: Convert to fraction form
    5,248.28/7,242.68 = 2,890.43/x
  3. Step 3: Cross multiply
    5,248.28x = 7,242.68 × 2,890.43
  4. Step 4: Simplify right side
    5,248.28x = 20,934,445.10
  5. Step 5: Solve for x
    x = 20,934,445.10/5,248.28
  6. Step 6: Final answer
    x = 3,988.82

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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.