Home / 1,961.88-2,707.36-1,077.76

Finding the Fourth Proportional to 1,961.88, 2,707.36 and 1,077.76

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Solution

The fourth proportional to 1,961.88, 2,707.36 and 1,077.76 is: 1,487.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.88 : 2,707.36 = 1,077.76 : x
  2. Step 2: Convert to fraction form
    1,961.88/2,707.36 = 1,077.76/x
  3. Step 3: Cross multiply
    1,961.88x = 2,707.36 × 1,077.76
  4. Step 4: Simplify right side
    1,961.88x = 2,917,884.31
  5. Step 5: Solve for x
    x = 2,917,884.31/1,961.88
  6. Step 6: Final answer
    x = 1,487.29

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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.