Home / 1,939.04-2,675.76-1,581.80

Finding the Fourth Proportional to 1,939.04, 2,675.76 and 1,581.80

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Solution

The fourth proportional to 1,939.04, 2,675.76 and 1,581.80 is: 2,182.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.04 : 2,675.76 = 1,581.80 : x
  2. Step 2: Convert to fraction form
    1,939.04/2,675.76 = 1,581.80/x
  3. Step 3: Cross multiply
    1,939.04x = 2,675.76 × 1,581.80
  4. Step 4: Simplify right side
    1,939.04x = 4,232,517.17
  5. Step 5: Solve for x
    x = 4,232,517.17/1,939.04
  6. Step 6: Final answer
    x = 2,182.79

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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.