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Finding the Fourth Proportional to 8,657.88, 12,990.05 and 4,495.29

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Solution

The fourth proportional to 8,657.88, 12,990.05 and 4,495.29 is: 6,744.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,657.88 : 12,990.05 = 4,495.29 : x
  2. Step 2: Convert to fraction form
    8,657.88/12,990.05 = 4,495.29/x
  3. Step 3: Cross multiply
    8,657.88x = 12,990.05 × 4,495.29
  4. Step 4: Simplify right side
    8,657.88x = 58,394,041.86
  5. Step 5: Solve for x
    x = 58,394,041.86/8,657.88
  6. Step 6: Final answer
    x = 6,744.61

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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.