Home / 1,965.16-2,712.11-1,081.13

Finding the Fourth Proportional to 1,965.16, 2,712.11 and 1,081.13

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Solution

The fourth proportional to 1,965.16, 2,712.11 and 1,081.13 is: 1,492.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.16 : 2,712.11 = 1,081.13 : x
  2. Step 2: Convert to fraction form
    1,965.16/2,712.11 = 1,081.13/x
  3. Step 3: Cross multiply
    1,965.16x = 2,712.11 × 1,081.13
  4. Step 4: Simplify right side
    1,965.16x = 2,932,138.08
  5. Step 5: Solve for x
    x = 2,932,138.08/1,965.16
  6. Step 6: Final answer
    x = 1,492.06

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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.