Home / 1,939.91-2,677.08-1,055.72

Finding the Fourth Proportional to 1,939.91, 2,677.08 and 1,055.72

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Solution

The fourth proportional to 1,939.91, 2,677.08 and 1,055.72 is: 1,456.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.91 : 2,677.08 = 1,055.72 : x
  2. Step 2: Convert to fraction form
    1,939.91/2,677.08 = 1,055.72/x
  3. Step 3: Cross multiply
    1,939.91x = 2,677.08 × 1,055.72
  4. Step 4: Simplify right side
    1,939.91x = 2,826,246.90
  5. Step 5: Solve for x
    x = 2,826,246.90/1,939.91
  6. Step 6: Final answer
    x = 1,456.90

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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.