Home / 8,612.20-12,906.14-3,680.11

Finding the Fourth Proportional to 8,612.20, 12,906.14 and 3,680.11

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Solution

The fourth proportional to 8,612.20, 12,906.14 and 3,680.11 is: 5,514.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.20 : 12,906.14 = 3,680.11 : x
  2. Step 2: Convert to fraction form
    8,612.20/12,906.14 = 3,680.11/x
  3. Step 3: Cross multiply
    8,612.20x = 12,906.14 × 3,680.11
  4. Step 4: Simplify right side
    8,612.20x = 47,495,950.34
  5. Step 5: Solve for x
    x = 47,495,950.34/8,612.20
  6. Step 6: Final answer
    x = 5,514.96

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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.