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Finding the Fourth Proportional to 8,487.48, 12,731.10 and 3,294.36

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Solution

The fourth proportional to 8,487.48, 12,731.10 and 3,294.36 is: 4,941.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.48 : 12,731.10 = 3,294.36 : x
  2. Step 2: Convert to fraction form
    8,487.48/12,731.10 = 3,294.36/x
  3. Step 3: Cross multiply
    8,487.48x = 12,731.10 × 3,294.36
  4. Step 4: Simplify right side
    8,487.48x = 41,940,826.60
  5. Step 5: Solve for x
    x = 41,940,826.60/8,487.48
  6. Step 6: Final answer
    x = 4,941.49

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1.5x scale

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.