Home / 1,249.75-1,878.68-1,159.57

Finding the Fourth Proportional to 1,249.75, 1,878.68 and 1,159.57

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Solution

The fourth proportional to 1,249.75, 1,878.68 and 1,159.57 is: 1,743.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.75 : 1,878.68 = 1,159.57 : x
  2. Step 2: Convert to fraction form
    1,249.75/1,878.68 = 1,159.57/x
  3. Step 3: Cross multiply
    1,249.75x = 1,878.68 × 1,159.57
  4. Step 4: Simplify right side
    1,249.75x = 2,178,460.97
  5. Step 5: Solve for x
    x = 2,178,460.97/1,249.75
  6. Step 6: Final answer
    x = 1,743.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.