Home / 1,249.12-1,722.69-1,000.35

Finding the Fourth Proportional to 1,249.12, 1,722.69 and 1,000.35

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Solution

The fourth proportional to 1,249.12, 1,722.69 and 1,000.35 is: 1,379.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.12 : 1,722.69 = 1,000.35 : x
  2. Step 2: Convert to fraction form
    1,249.12/1,722.69 = 1,000.35/x
  3. Step 3: Cross multiply
    1,249.12x = 1,722.69 × 1,000.35
  4. Step 4: Simplify right side
    1,249.12x = 1,723,292.94
  5. Step 5: Solve for x
    x = 1,723,292.94/1,249.12
  6. Step 6: Final answer
    x = 1,379.61

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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.