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Finding the Fourth Proportional to 3,781.47, 5,670.49 and 1,589.01

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Solution

The fourth proportional to 3,781.47, 5,670.49 and 1,589.01 is: 2,382.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.47 : 5,670.49 = 1,589.01 : x
  2. Step 2: Convert to fraction form
    3,781.47/5,670.49 = 1,589.01/x
  3. Step 3: Cross multiply
    3,781.47x = 5,670.49 × 1,589.01
  4. Step 4: Simplify right side
    3,781.47x = 9,010,465.31
  5. Step 5: Solve for x
    x = 9,010,465.31/3,781.47
  6. Step 6: Final answer
    x = 2,382.79

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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.