Home / 8,974.12-12,385.44-5,147.25

Finding the Fourth Proportional to 8,974.12, 12,385.44 and 5,147.25

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Solution

The fourth proportional to 8,974.12, 12,385.44 and 5,147.25 is: 7,103.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,974.12 : 12,385.44 = 5,147.25 : x
  2. Step 2: Convert to fraction form
    8,974.12/12,385.44 = 5,147.25/x
  3. Step 3: Cross multiply
    8,974.12x = 12,385.44 × 5,147.25
  4. Step 4: Simplify right side
    8,974.12x = 63,750,928.90
  5. Step 5: Solve for x
    x = 63,750,928.90/8,974.12
  6. Step 6: Final answer
    x = 7,103.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.