Home / 1,161.29-1,742.38-512.48

Finding the Fourth Proportional to 1,161.29, 1,742.38 and 512.48

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Solution

The fourth proportional to 1,161.29, 1,742.38 and 512.48 is: 768.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.29 : 1,742.38 = 512.48 : x
  2. Step 2: Convert to fraction form
    1,161.29/1,742.38 = 512.48/x
  3. Step 3: Cross multiply
    1,161.29x = 1,742.38 × 512.48
  4. Step 4: Simplify right side
    1,161.29x = 892,937.98
  5. Step 5: Solve for x
    x = 892,937.98/1,161.29
  6. Step 6: Final answer
    x = 768.92

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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.