Home / 9,111.76-12,562.49-6,121.04

Finding the Fourth Proportional to 9,111.76, 12,562.49 and 6,121.04

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Solution

The fourth proportional to 9,111.76, 12,562.49 and 6,121.04 is: 8,439.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,111.76 : 12,562.49 = 6,121.04 : x
  2. Step 2: Convert to fraction form
    9,111.76/12,562.49 = 6,121.04/x
  3. Step 3: Cross multiply
    9,111.76x = 12,562.49 × 6,121.04
  4. Step 4: Simplify right side
    9,111.76x = 76,895,456.28
  5. Step 5: Solve for x
    x = 76,895,456.28/9,111.76
  6. Step 6: Final answer
    x = 8,439.15

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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.