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Finding the Fourth Proportional to 1,961.74, 2,707.17 and 1,077.52

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Solution

The fourth proportional to 1,961.74, 2,707.17 and 1,077.52 is: 1,486.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.74 : 2,707.17 = 1,077.52 : x
  2. Step 2: Convert to fraction form
    1,961.74/2,707.17 = 1,077.52/x
  3. Step 3: Cross multiply
    1,961.74x = 2,707.17 × 1,077.52
  4. Step 4: Simplify right side
    1,961.74x = 2,917,016.28
  5. Step 5: Solve for x
    x = 2,917,016.28/1,961.74
  6. Step 6: Final answer
    x = 1,486.96

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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.