Home / 1,057.24-1,586.27-765.11

Finding the Fourth Proportional to 1,057.24, 1,586.27 and 765.11

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Solution

The fourth proportional to 1,057.24, 1,586.27 and 765.11 is: 1,147.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,057.24 : 1,586.27 = 765.11 : x
  2. Step 2: Convert to fraction form
    1,057.24/1,586.27 = 765.11/x
  3. Step 3: Cross multiply
    1,057.24x = 1,586.27 × 765.11
  4. Step 4: Simplify right side
    1,057.24x = 1,213,676.92
  5. Step 5: Solve for x
    x = 1,213,676.92/1,057.24
  6. Step 6: Final answer
    x = 1,147.97

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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.