Home / 8,387.20-12,580.76-4,922.56

Finding the Fourth Proportional to 8,387.20, 12,580.76 and 4,922.56

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Solution

The fourth proportional to 8,387.20, 12,580.76 and 4,922.56 is: 7,383.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.20 : 12,580.76 = 4,922.56 : x
  2. Step 2: Convert to fraction form
    8,387.20/12,580.76 = 4,922.56/x
  3. Step 3: Cross multiply
    8,387.20x = 12,580.76 × 4,922.56
  4. Step 4: Simplify right side
    8,387.20x = 61,929,545.95
  5. Step 5: Solve for x
    x = 61,929,545.95/8,387.20
  6. Step 6: Final answer
    x = 7,383.82

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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.