Home / 1,966.11-2,713.12-1,081.77

Finding the Fourth Proportional to 1,966.11, 2,713.12 and 1,081.77

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Solution

The fourth proportional to 1,966.11, 2,713.12 and 1,081.77 is: 1,492.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.11 : 2,713.12 = 1,081.77 : x
  2. Step 2: Convert to fraction form
    1,966.11/2,713.12 = 1,081.77/x
  3. Step 3: Cross multiply
    1,966.11x = 2,713.12 × 1,081.77
  4. Step 4: Simplify right side
    1,966.11x = 2,934,971.82
  5. Step 5: Solve for x
    x = 2,934,971.82/1,966.11
  6. Step 6: Final answer
    x = 1,492.78

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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.