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Finding the Fourth Proportional to 9,160.80, 12,641.33 and 8,892.08

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Solution

The fourth proportional to 9,160.80, 12,641.33 and 8,892.08 is: 12,270.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,160.80 : 12,641.33 = 8,892.08 : x
  2. Step 2: Convert to fraction form
    9,160.80/12,641.33 = 8,892.08/x
  3. Step 3: Cross multiply
    9,160.80x = 12,641.33 × 8,892.08
  4. Step 4: Simplify right side
    9,160.80x = 112,407,680.65
  5. Step 5: Solve for x
    x = 112,407,680.65/9,160.80
  6. Step 6: Final answer
    x = 12,270.51

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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.