Home / 1,187.27-1,779.07-926.65

Finding the Fourth Proportional to 1,187.27, 1,779.07 and 926.65

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Solution

The fourth proportional to 1,187.27, 1,779.07 and 926.65 is: 1,388.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187.27 : 1,779.07 = 926.65 : x
  2. Step 2: Convert to fraction form
    1,187.27/1,779.07 = 926.65/x
  3. Step 3: Cross multiply
    1,187.27x = 1,779.07 × 926.65
  4. Step 4: Simplify right side
    1,187.27x = 1,648,575.22
  5. Step 5: Solve for x
    x = 1,648,575.22/1,187.27
  6. Step 6: Final answer
    x = 1,388.54

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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.