Home / 8,787.40-12,127.26-5,252.56

Finding the Fourth Proportional to 8,787.40, 12,127.26 and 5,252.56

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Solution

The fourth proportional to 8,787.40, 12,127.26 and 5,252.56 is: 7,248.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,787.40 : 12,127.26 = 5,252.56 : x
  2. Step 2: Convert to fraction form
    8,787.40/12,127.26 = 5,252.56/x
  3. Step 3: Cross multiply
    8,787.40x = 12,127.26 × 5,252.56
  4. Step 4: Simplify right side
    8,787.40x = 63,699,160.79
  5. Step 5: Solve for x
    x = 63,699,160.79/8,787.40
  6. Step 6: Final answer
    x = 7,248.92

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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.