Home / 9,409.20-12,983.76-5,217.12

Finding the Fourth Proportional to 9,409.20, 12,983.76 and 5,217.12

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Solution

The fourth proportional to 9,409.20, 12,983.76 and 5,217.12 is: 7,199.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,409.20 : 12,983.76 = 5,217.12 : x
  2. Step 2: Convert to fraction form
    9,409.20/12,983.76 = 5,217.12/x
  3. Step 3: Cross multiply
    9,409.20x = 12,983.76 × 5,217.12
  4. Step 4: Simplify right side
    9,409.20x = 67,737,833.97
  5. Step 5: Solve for x
    x = 67,737,833.97/9,409.20
  6. Step 6: Final answer
    x = 7,199.11

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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.