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Finding the Fourth Proportional to 8,527.60, 12,791.40 and 5,903.20

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Solution

The fourth proportional to 8,527.60, 12,791.40 and 5,903.20 is: 8,854.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,527.60 : 12,791.40 = 5,903.20 : x
  2. Step 2: Convert to fraction form
    8,527.60/12,791.40 = 5,903.20/x
  3. Step 3: Cross multiply
    8,527.60x = 12,791.40 × 5,903.20
  4. Step 4: Simplify right side
    8,527.60x = 75,510,192.48
  5. Step 5: Solve for x
    x = 75,510,192.48/8,527.60
  6. Step 6: Final answer
    x = 8,854.80

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.