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Finding the Fourth Proportional to 8,445.60, 12,672.36 and 5,673.60

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Solution

The fourth proportional to 8,445.60, 12,672.36 and 5,673.60 is: 8,513.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,445.60 : 12,672.36 = 5,673.60 : x
  2. Step 2: Convert to fraction form
    8,445.60/12,672.36 = 5,673.60/x
  3. Step 3: Cross multiply
    8,445.60x = 12,672.36 × 5,673.60
  4. Step 4: Simplify right side
    8,445.60x = 71,897,901.70
  5. Step 5: Solve for x
    x = 71,897,901.70/8,445.60
  6. Step 6: Final answer
    x = 8,513.06

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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.