Home / 1,293.06-1,939.45-512.90

Finding the Fourth Proportional to 1,293.06, 1,939.45 and 512.90

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Solution

The fourth proportional to 1,293.06, 1,939.45 and 512.90 is: 769.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.06 : 1,939.45 = 512.90 : x
  2. Step 2: Convert to fraction form
    1,293.06/1,939.45 = 512.90/x
  3. Step 3: Cross multiply
    1,293.06x = 1,939.45 × 512.90
  4. Step 4: Simplify right side
    1,293.06x = 994,743.91
  5. Step 5: Solve for x
    x = 994,743.91/1,293.06
  6. Step 6: Final answer
    x = 769.29

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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.