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Finding the Fourth Proportional to 3,894.47, 5,842.53 and 1,429.31

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Solution

The fourth proportional to 3,894.47, 5,842.53 and 1,429.31 is: 2,144.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.47 : 5,842.53 = 1,429.31 : x
  2. Step 2: Convert to fraction form
    3,894.47/5,842.53 = 1,429.31/x
  3. Step 3: Cross multiply
    3,894.47x = 5,842.53 × 1,429.31
  4. Step 4: Simplify right side
    3,894.47x = 8,350,757.34
  5. Step 5: Solve for x
    x = 8,350,757.34/3,894.47
  6. Step 6: Final answer
    x = 2,144.26

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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.