Home / 1,252.19-1,879.82-1,187.61

Finding the Fourth Proportional to 1,252.19, 1,879.82 and 1,187.61

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Solution

The fourth proportional to 1,252.19, 1,879.82 and 1,187.61 is: 1,782.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252.19 : 1,879.82 = 1,187.61 : x
  2. Step 2: Convert to fraction form
    1,252.19/1,879.82 = 1,187.61/x
  3. Step 3: Cross multiply
    1,252.19x = 1,879.82 × 1,187.61
  4. Step 4: Simplify right side
    1,252.19x = 2,232,483.63
  5. Step 5: Solve for x
    x = 2,232,483.63/1,252.19
  6. Step 6: Final answer
    x = 1,782.87

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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.