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Finding the Fourth Proportional to 8,867.42, 12,225.68 and 7,268.18

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Solution

The fourth proportional to 8,867.42, 12,225.68 and 7,268.18 is: 10,020.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,867.42 : 12,225.68 = 7,268.18 : x
  2. Step 2: Convert to fraction form
    8,867.42/12,225.68 = 7,268.18/x
  3. Step 3: Cross multiply
    8,867.42x = 12,225.68 × 7,268.18
  4. Step 4: Simplify right side
    8,867.42x = 88,858,442.86
  5. Step 5: Solve for x
    x = 88,858,442.86/8,867.42
  6. Step 6: Final answer
    x = 10,020.78

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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.