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Finding the Fourth Proportional to 7,960.48, 11,951.58 and 5,489.20

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Solution

The fourth proportional to 7,960.48, 11,951.58 and 5,489.20 is: 8,241.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,960.48 : 11,951.58 = 5,489.20 : x
  2. Step 2: Convert to fraction form
    7,960.48/11,951.58 = 5,489.20/x
  3. Step 3: Cross multiply
    7,960.48x = 11,951.58 × 5,489.20
  4. Step 4: Simplify right side
    7,960.48x = 65,604,612.94
  5. Step 5: Solve for x
    x = 65,604,612.94/7,960.48
  6. Step 6: Final answer
    x = 8,241.29

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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.