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Finding the Fourth Proportional to 5,321.47, 7,343.31 and 2,931.26

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Solution

The fourth proportional to 5,321.47, 7,343.31 and 2,931.26 is: 4,044.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,321.47 : 7,343.31 = 2,931.26 : x
  2. Step 2: Convert to fraction form
    5,321.47/7,343.31 = 2,931.26/x
  3. Step 3: Cross multiply
    5,321.47x = 7,343.31 × 2,931.26
  4. Step 4: Simplify right side
    5,321.47x = 21,525,170.62
  5. Step 5: Solve for x
    x = 21,525,170.62/5,321.47
  6. Step 6: Final answer
    x = 4,044.97

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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.