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Finding the Fourth Proportional to 2,114.31, 3,171.53 and 575.31

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Solution

The fourth proportional to 2,114.31, 3,171.53 and 575.31 is: 862.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.31 : 3,171.53 = 575.31 : x
  2. Step 2: Convert to fraction form
    2,114.31/3,171.53 = 575.31/x
  3. Step 3: Cross multiply
    2,114.31x = 3,171.53 × 575.31
  4. Step 4: Simplify right side
    2,114.31x = 1,824,610.05
  5. Step 5: Solve for x
    x = 1,824,610.05/2,114.31
  6. Step 6: Final answer
    x = 862.98

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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.