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Finding the Fourth Proportional to 2,650.81, 3,658.08 and 1,471.90

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Solution

The fourth proportional to 2,650.81, 3,658.08 and 1,471.90 is: 2,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,650.81 : 3,658.08 = 1,471.90 : x
  2. Step 2: Convert to fraction form
    2,650.81/3,658.08 = 1,471.90/x
  3. Step 3: Cross multiply
    2,650.81x = 3,658.08 × 1,471.90
  4. Step 4: Simplify right side
    2,650.81x = 5,384,327.95
  5. Step 5: Solve for x
    x = 5,384,327.95/2,650.81
  6. Step 6: Final answer
    x = 2,031.20

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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.