Home / 1,961.83-2,707.39-1,077.70

Finding the Fourth Proportional to 1,961.83, 2,707.39 and 1,077.70

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Solution

The fourth proportional to 1,961.83, 2,707.39 and 1,077.70 is: 1,487.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.83 : 2,707.39 = 1,077.70 : x
  2. Step 2: Convert to fraction form
    1,961.83/2,707.39 = 1,077.70/x
  3. Step 3: Cross multiply
    1,961.83x = 2,707.39 × 1,077.70
  4. Step 4: Simplify right side
    1,961.83x = 2,917,740.67
  5. Step 5: Solve for x
    x = 2,917,740.67/1,961.83
  6. Step 6: Final answer
    x = 1,487.25

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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.