Home / 1,119.39-1,689.11-1,074.44

Finding the Fourth Proportional to 1,119.39, 1,689.11 and 1,074.44

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Solution

The fourth proportional to 1,119.39, 1,689.11 and 1,074.44 is: 1,621.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.39 : 1,689.11 = 1,074.44 : x
  2. Step 2: Convert to fraction form
    1,119.39/1,689.11 = 1,074.44/x
  3. Step 3: Cross multiply
    1,119.39x = 1,689.11 × 1,074.44
  4. Step 4: Simplify right side
    1,119.39x = 1,814,833.53
  5. Step 5: Solve for x
    x = 1,814,833.53/1,119.39
  6. Step 6: Final answer
    x = 1,621.27

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.