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Finding the Fourth Proportional to 3,866.16, 5,337.49 and 2,672.90

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Solution

The fourth proportional to 3,866.16, 5,337.49 and 2,672.90 is: 3,690.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.16 : 5,337.49 = 2,672.90 : x
  2. Step 2: Convert to fraction form
    3,866.16/5,337.49 = 2,672.90/x
  3. Step 3: Cross multiply
    3,866.16x = 5,337.49 × 2,672.90
  4. Step 4: Simplify right side
    3,866.16x = 14,266,577.02
  5. Step 5: Solve for x
    x = 14,266,577.02/3,866.16
  6. Step 6: Final answer
    x = 3,690.12

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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.