Home / 1,965.68-2,712.53-1,081.31

Finding the Fourth Proportional to 1,965.68, 2,712.53 and 1,081.31

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Solution

The fourth proportional to 1,965.68, 2,712.53 and 1,081.31 is: 1,492.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,965.68 : 2,712.53 = 1,081.31 : x
  2. Step 2: Convert to fraction form
    1,965.68/2,712.53 = 1,081.31/x
  3. Step 3: Cross multiply
    1,965.68x = 2,712.53 × 1,081.31
  4. Step 4: Simplify right side
    1,965.68x = 2,933,066.85
  5. Step 5: Solve for x
    x = 2,933,066.85/1,965.68
  6. Step 6: Final answer
    x = 1,492.14

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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.