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Finding the Fourth Proportional to 8,374.60, 12,553.90 and 3,108.20

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Solution

The fourth proportional to 8,374.60, 12,553.90 and 3,108.20 is: 4,659.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,374.60 : 12,553.90 = 3,108.20 : x
  2. Step 2: Convert to fraction form
    8,374.60/12,553.90 = 3,108.20/x
  3. Step 3: Cross multiply
    8,374.60x = 12,553.90 × 3,108.20
  4. Step 4: Simplify right side
    8,374.60x = 39,020,031.98
  5. Step 5: Solve for x
    x = 39,020,031.98/8,374.60
  6. Step 6: Final answer
    x = 4,659.33

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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.