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Finding the Fourth Proportional to 6,497.64, 9,747.90 and 1,881

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Solution

The fourth proportional to 6,497.64, 9,747.90 and 1,881 is: 2,821.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,497.64 : 9,747.90 = 1,881 : x
  2. Step 2: Convert to fraction form
    6,497.64/9,747.90 = 1,881/x
  3. Step 3: Cross multiply
    6,497.64x = 9,747.90 × 1,881
  4. Step 4: Simplify right side
    6,497.64x = 18,335,799.90
  5. Step 5: Solve for x
    x = 18,335,799.90/6,497.64
  6. Step 6: Final answer
    x = 2,821.92

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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.