Home / 1,961.94-2,707.47-1,077.72

Finding the Fourth Proportional to 1,961.94, 2,707.47 and 1,077.72

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Solution

The fourth proportional to 1,961.94, 2,707.47 and 1,077.72 is: 1,487.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.94 : 2,707.47 = 1,077.72 : x
  2. Step 2: Convert to fraction form
    1,961.94/2,707.47 = 1,077.72/x
  3. Step 3: Cross multiply
    1,961.94x = 2,707.47 × 1,077.72
  4. Step 4: Simplify right side
    1,961.94x = 2,917,894.57
  5. Step 5: Solve for x
    x = 2,917,894.57/1,961.94
  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.