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Finding the Fourth Proportional to 3,697, 5,101.88 and 2,125.20

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Solution

The fourth proportional to 3,697, 5,101.88 and 2,125.20 is: 2,932.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,697 : 5,101.88 = 2,125.20 : x
  2. Step 2: Convert to fraction form
    3,697/5,101.88 = 2,125.20/x
  3. Step 3: Cross multiply
    3,697x = 5,101.88 × 2,125.20
  4. Step 4: Simplify right side
    3,697x = 10,842,515.38
  5. Step 5: Solve for x
    x = 10,842,515.38/3,697
  6. Step 6: Final answer
    x = 2,932.79

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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.