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Finding the Fourth Proportional to 2,114.30, 3,171.42 and 575.30

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Solution

The fourth proportional to 2,114.30, 3,171.42 and 575.30 is: 862.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.30 : 3,171.42 = 575.30 : x
  2. Step 2: Convert to fraction form
    2,114.30/3,171.42 = 575.30/x
  3. Step 3: Cross multiply
    2,114.30x = 3,171.42 × 575.30
  4. Step 4: Simplify right side
    2,114.30x = 1,824,517.93
  5. Step 5: Solve for x
    x = 1,824,517.93/2,114.30
  6. Step 6: Final answer
    x = 862.94

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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.