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Finding the Fourth Proportional to 9,091.52, 12,532 and 8,328.80

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Solution

The fourth proportional to 9,091.52, 12,532 and 8,328.80 is: 11,480.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,091.52 : 12,532 = 8,328.80 : x
  2. Step 2: Convert to fraction form
    9,091.52/12,532 = 8,328.80/x
  3. Step 3: Cross multiply
    9,091.52x = 12,532 × 8,328.80
  4. Step 4: Simplify right side
    9,091.52x = 104,376,552.93
  5. Step 5: Solve for x
    x = 104,376,552.93/9,091.52
  6. Step 6: Final answer
    x = 11,480.65

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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.