Home / 1,961.72-2,707.34-1,077.70

Finding the Fourth Proportional to 1,961.72, 2,707.34 and 1,077.70

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Solution

The fourth proportional to 1,961.72, 2,707.34 and 1,077.70 is: 1,487.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.72 : 2,707.34 = 1,077.70 : x
  2. Step 2: Convert to fraction form
    1,961.72/2,707.34 = 1,077.70/x
  3. Step 3: Cross multiply
    1,961.72x = 2,707.34 × 1,077.70
  4. Step 4: Simplify right side
    1,961.72x = 2,917,700.32
  5. Step 5: Solve for x
    x = 2,917,700.32/1,961.72
  6. Step 6: Final answer
    x = 1,487.32

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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.