Home / 2,125.04-3,192.56-1,249.78

Finding the Fourth Proportional to 2,125.04, 3,192.56 and 1,249.78

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Solution

The fourth proportional to 2,125.04, 3,192.56 and 1,249.78 is: 1,877.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.04 : 3,192.56 = 1,249.78 : x
  2. Step 2: Convert to fraction form
    2,125.04/3,192.56 = 1,249.78/x
  3. Step 3: Cross multiply
    2,125.04x = 3,192.56 × 1,249.78
  4. Step 4: Simplify right side
    2,125.04x = 3,990,001.11
  5. Step 5: Solve for x
    x = 3,990,001.11/2,125.04
  6. Step 6: Final answer
    x = 1,877.62

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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.