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Finding the Fourth Proportional to 3,951.64, 5,448.10 and 3,240.88

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Solution

The fourth proportional to 3,951.64, 5,448.10 and 3,240.88 is: 4,468.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,951.64 : 5,448.10 = 3,240.88 : x
  2. Step 2: Convert to fraction form
    3,951.64/5,448.10 = 3,240.88/x
  3. Step 3: Cross multiply
    3,951.64x = 5,448.10 × 3,240.88
  4. Step 4: Simplify right side
    3,951.64x = 17,656,638.33
  5. Step 5: Solve for x
    x = 17,656,638.33/3,951.64
  6. Step 6: Final answer
    x = 4,468.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.