Home / 1,949.40-2,689.85-1,110.11

Finding the Fourth Proportional to 1,949.40, 2,689.85 and 1,110.11

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Solution

The fourth proportional to 1,949.40, 2,689.85 and 1,110.11 is: 1,531.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.40 : 2,689.85 = 1,110.11 : x
  2. Step 2: Convert to fraction form
    1,949.40/2,689.85 = 1,110.11/x
  3. Step 3: Cross multiply
    1,949.40x = 2,689.85 × 1,110.11
  4. Step 4: Simplify right side
    1,949.40x = 2,986,010.38
  5. Step 5: Solve for x
    x = 2,986,010.38/1,949.40
  6. Step 6: Final answer
    x = 1,531.76

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1.5x scale

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.