Home / 8,320.73-12,470.56-3,639.48

Finding the Fourth Proportional to 8,320.73, 12,470.56 and 3,639.48

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Solution

The fourth proportional to 8,320.73, 12,470.56 and 3,639.48 is: 5,454.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.73 : 12,470.56 = 3,639.48 : x
  2. Step 2: Convert to fraction form
    8,320.73/12,470.56 = 3,639.48/x
  3. Step 3: Cross multiply
    8,320.73x = 12,470.56 × 3,639.48
  4. Step 4: Simplify right side
    8,320.73x = 45,386,367.99
  5. Step 5: Solve for x
    x = 45,386,367.99/8,320.73
  6. Step 6: Final answer
    x = 5,454.62

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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.