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Finding the Fourth Proportional to 8,849.35, 12,132.95 and 8,691.40

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Solution

The fourth proportional to 8,849.35, 12,132.95 and 8,691.40 is: 11,916.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,849.35 : 12,132.95 = 8,691.40 : x
  2. Step 2: Convert to fraction form
    8,849.35/12,132.95 = 8,691.40/x
  3. Step 3: Cross multiply
    8,849.35x = 12,132.95 × 8,691.40
  4. Step 4: Simplify right side
    8,849.35x = 105,452,321.63
  5. Step 5: Solve for x
    x = 105,452,321.63/8,849.35
  6. Step 6: Final answer
    x = 11,916.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.