Home / 8,147.20-12,253.20-7,304.80

Finding the Fourth Proportional to 8,147.20, 12,253.20 and 7,304.80

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Solution

The fourth proportional to 8,147.20, 12,253.20 and 7,304.80 is: 10,986.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,147.20 : 12,253.20 = 7,304.80 : x
  2. Step 2: Convert to fraction form
    8,147.20/12,253.20 = 7,304.80/x
  3. Step 3: Cross multiply
    8,147.20x = 12,253.20 × 7,304.80
  4. Step 4: Simplify right side
    8,147.20x = 89,507,175.36
  5. Step 5: Solve for x
    x = 89,507,175.36/8,147.20
  6. Step 6: Final answer
    x = 10,986.25

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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.