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Finding the Fourth Proportional to 8,706.80, 13,061.52 and 2,862.08

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Solution

The fourth proportional to 8,706.80, 13,061.52 and 2,862.08 is: 4,293.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.80 : 13,061.52 = 2,862.08 : x
  2. Step 2: Convert to fraction form
    8,706.80/13,061.52 = 2,862.08/x
  3. Step 3: Cross multiply
    8,706.80x = 13,061.52 × 2,862.08
  4. Step 4: Simplify right side
    8,706.80x = 37,383,115.16
  5. Step 5: Solve for x
    x = 37,383,115.16/8,706.80
  6. Step 6: Final answer
    x = 4,293.55

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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.