Home / 1,186.25-1,779.17-723.94

Finding the Fourth Proportional to 1,186.25, 1,779.17 and 723.94

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Solution

The fourth proportional to 1,186.25, 1,779.17 and 723.94 is: 1,085.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186.25 : 1,779.17 = 723.94 : x
  2. Step 2: Convert to fraction form
    1,186.25/1,779.17 = 723.94/x
  3. Step 3: Cross multiply
    1,186.25x = 1,779.17 × 723.94
  4. Step 4: Simplify right side
    1,186.25x = 1,288,004.26
  5. Step 5: Solve for x
    x = 1,288,004.26/1,186.25
  6. Step 6: Final answer
    x = 1,085.78

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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.