Home / 3,129.30-4,693.96-938.04

Finding the Fourth Proportional to 3,129.30, 4,693.96 and 938.04

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Solution

The fourth proportional to 3,129.30, 4,693.96 and 938.04 is: 1,407.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.30 : 4,693.96 = 938.04 : x
  2. Step 2: Convert to fraction form
    3,129.30/4,693.96 = 938.04/x
  3. Step 3: Cross multiply
    3,129.30x = 4,693.96 × 938.04
  4. Step 4: Simplify right side
    3,129.30x = 4,403,122.24
  5. Step 5: Solve for x
    x = 4,403,122.24/3,129.30
  6. Step 6: Final answer
    x = 1,407.06

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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.