Home / 7,145.28-10,721.52-3,248.88

Finding the Fourth Proportional to 7,145.28, 10,721.52 and 3,248.88

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Solution

The fourth proportional to 7,145.28, 10,721.52 and 3,248.88 is: 4,874.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.28 : 10,721.52 = 3,248.88 : x
  2. Step 2: Convert to fraction form
    7,145.28/10,721.52 = 3,248.88/x
  3. Step 3: Cross multiply
    7,145.28x = 10,721.52 × 3,248.88
  4. Step 4: Simplify right side
    7,145.28x = 34,832,931.90
  5. Step 5: Solve for x
    x = 34,832,931.90/7,145.28
  6. Step 6: Final answer
    x = 4,874.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.