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Finding the Fourth Proportional to 8,572.57, 12,845.55 and 5,945.20

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Solution

The fourth proportional to 8,572.57, 12,845.55 and 5,945.20 is: 8,908.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.57 : 12,845.55 = 5,945.20 : x
  2. Step 2: Convert to fraction form
    8,572.57/12,845.55 = 5,945.20/x
  3. Step 3: Cross multiply
    8,572.57x = 12,845.55 × 5,945.20
  4. Step 4: Simplify right side
    8,572.57x = 76,369,363.86
  5. Step 5: Solve for x
    x = 76,369,363.86/8,572.57
  6. Step 6: Final answer
    x = 8,908.57

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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.