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Finding the Fourth Proportional to 1,249.26, 1,723.08 and 876.12

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Solution

The fourth proportional to 1,249.26, 1,723.08 and 876.12 is: 1,208.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.26 : 1,723.08 = 876.12 : x
  2. Step 2: Convert to fraction form
    1,249.26/1,723.08 = 876.12/x
  3. Step 3: Cross multiply
    1,249.26x = 1,723.08 × 876.12
  4. Step 4: Simplify right side
    1,249.26x = 1,509,624.85
  5. Step 5: Solve for x
    x = 1,509,624.85/1,249.26
  6. Step 6: Final answer
    x = 1,208.42

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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.