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Finding the Fourth Proportional to 3,867.80, 5,801.15 and 1,647.53

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Solution

The fourth proportional to 3,867.80, 5,801.15 and 1,647.53 is: 2,471.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,867.80 : 5,801.15 = 1,647.53 : x
  2. Step 2: Convert to fraction form
    3,867.80/5,801.15 = 1,647.53/x
  3. Step 3: Cross multiply
    3,867.80x = 5,801.15 × 1,647.53
  4. Step 4: Simplify right side
    3,867.80x = 9,557,531.42
  5. Step 5: Solve for x
    x = 9,557,531.42/3,867.80
  6. Step 6: Final answer
    x = 2,471.05

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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.