Home / 8,472.20-12,691.86-4,763.12

Finding the Fourth Proportional to 8,472.20, 12,691.86 and 4,763.12

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Solution

The fourth proportional to 8,472.20, 12,691.86 and 4,763.12 is: 7,135.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.20 : 12,691.86 = 4,763.12 : x
  2. Step 2: Convert to fraction form
    8,472.20/12,691.86 = 4,763.12/x
  3. Step 3: Cross multiply
    8,472.20x = 12,691.86 × 4,763.12
  4. Step 4: Simplify right side
    8,472.20x = 60,452,852.20
  5. Step 5: Solve for x
    x = 60,452,852.20/8,472.20
  6. Step 6: Final answer
    x = 7,135.44

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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.