Home / 5,248.28-7,872.48-2,128.36

Finding the Fourth Proportional to 5,248.28, 7,872.48 and 2,128.36

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Solution

The fourth proportional to 5,248.28, 7,872.48 and 2,128.36 is: 3,192.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,248.28 : 7,872.48 = 2,128.36 : x
  2. Step 2: Convert to fraction form
    5,248.28/7,872.48 = 2,128.36/x
  3. Step 3: Cross multiply
    5,248.28x = 7,872.48 × 2,128.36
  4. Step 4: Simplify right side
    5,248.28x = 16,755,471.53
  5. Step 5: Solve for x
    x = 16,755,471.53/5,248.28
  6. Step 6: Final answer
    x = 3,192.56

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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.