Home / 7,645.29-11,454.87-5,978.78

Finding the Fourth Proportional to 7,645.29, 11,454.87 and 5,978.78

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Solution

The fourth proportional to 7,645.29, 11,454.87 and 5,978.78 is: 8,957.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,645.29 : 11,454.87 = 5,978.78 : x
  2. Step 2: Convert to fraction form
    7,645.29/11,454.87 = 5,978.78/x
  3. Step 3: Cross multiply
    7,645.29x = 11,454.87 × 5,978.78
  4. Step 4: Simplify right side
    7,645.29x = 68,486,137.53
  5. Step 5: Solve for x
    x = 68,486,137.53/7,645.29
  6. Step 6: Final answer
    x = 8,957.95

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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.