Home / 1,949.42-2,689.92-1,109.85

Finding the Fourth Proportional to 1,949.42, 2,689.92 and 1,109.85

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Solution

The fourth proportional to 1,949.42, 2,689.92 and 1,109.85 is: 1,531.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.42 : 2,689.92 = 1,109.85 : x
  2. Step 2: Convert to fraction form
    1,949.42/2,689.92 = 1,109.85/x
  3. Step 3: Cross multiply
    1,949.42x = 2,689.92 × 1,109.85
  4. Step 4: Simplify right side
    1,949.42x = 2,985,407.71
  5. Step 5: Solve for x
    x = 2,985,407.71/1,949.42
  6. Step 6: Final answer
    x = 1,531.44

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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.