Home / 1,189.24-1,779.60-824.29

Finding the Fourth Proportional to 1,189.24, 1,779.60 and 824.29

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Solution

The fourth proportional to 1,189.24, 1,779.60 and 824.29 is: 1,233.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189.24 : 1,779.60 = 824.29 : x
  2. Step 2: Convert to fraction form
    1,189.24/1,779.60 = 824.29/x
  3. Step 3: Cross multiply
    1,189.24x = 1,779.60 × 824.29
  4. Step 4: Simplify right side
    1,189.24x = 1,466,906.48
  5. Step 5: Solve for x
    x = 1,466,906.48/1,189.24
  6. Step 6: Final answer
    x = 1,233.48

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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.