Home / 1,939.61-2,674.19-1,257.04

Finding the Fourth Proportional to 1,939.61, 2,674.19 and 1,257.04

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Solution

The fourth proportional to 1,939.61, 2,674.19 and 1,257.04 is: 1,733.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.61 : 2,674.19 = 1,257.04 : x
  2. Step 2: Convert to fraction form
    1,939.61/2,674.19 = 1,257.04/x
  3. Step 3: Cross multiply
    1,939.61x = 2,674.19 × 1,257.04
  4. Step 4: Simplify right side
    1,939.61x = 3,361,563.80
  5. Step 5: Solve for x
    x = 3,361,563.80/1,939.61
  6. Step 6: Final answer
    x = 1,733.11

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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.