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Finding the Fourth Proportional to 5,276.08, 7,913.22 and 2,640.88

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Solution

The fourth proportional to 5,276.08, 7,913.22 and 2,640.88 is: 3,960.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.08 : 7,913.22 = 2,640.88 : x
  2. Step 2: Convert to fraction form
    5,276.08/7,913.22 = 2,640.88/x
  3. Step 3: Cross multiply
    5,276.08x = 7,913.22 × 2,640.88
  4. Step 4: Simplify right side
    5,276.08x = 20,897,864.43
  5. Step 5: Solve for x
    x = 20,897,864.43/5,276.08
  6. Step 6: Final answer
    x = 3,960.87

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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.