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Finding the Fourth Proportional to 8,793.90, 12,135.42 and 5,255.10

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Solution

The fourth proportional to 8,793.90, 12,135.42 and 5,255.10 is: 7,251.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,793.90 : 12,135.42 = 5,255.10 : x
  2. Step 2: Convert to fraction form
    8,793.90/12,135.42 = 5,255.10/x
  3. Step 3: Cross multiply
    8,793.90x = 12,135.42 × 5,255.10
  4. Step 4: Simplify right side
    8,793.90x = 63,772,845.64
  5. Step 5: Solve for x
    x = 63,772,845.64/8,793.90
  6. Step 6: Final answer
    x = 7,251.94

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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.