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Finding the Fourth Proportional to 8,687.34, 13,032.45 and 4,070.34

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Solution

The fourth proportional to 8,687.34, 13,032.45 and 4,070.34 is: 6,106.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.34 : 13,032.45 = 4,070.34 : x
  2. Step 2: Convert to fraction form
    8,687.34/13,032.45 = 4,070.34/x
  3. Step 3: Cross multiply
    8,687.34x = 13,032.45 × 4,070.34
  4. Step 4: Simplify right side
    8,687.34x = 53,046,502.53
  5. Step 5: Solve for x
    x = 53,046,502.53/8,687.34
  6. Step 6: Final answer
    x = 6,106.18

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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.