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Finding the Fourth Proportional to 3,963.90, 5,949.45 and 2,666.28

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Solution

The fourth proportional to 3,963.90, 5,949.45 and 2,666.28 is: 4,001.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,963.90 : 5,949.45 = 2,666.28 : x
  2. Step 2: Convert to fraction form
    3,963.90/5,949.45 = 2,666.28/x
  3. Step 3: Cross multiply
    3,963.90x = 5,949.45 × 2,666.28
  4. Step 4: Simplify right side
    3,963.90x = 15,862,899.55
  5. Step 5: Solve for x
    x = 15,862,899.55/3,963.90
  6. Step 6: Final answer
    x = 4,001.84

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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.