Home / 6,781.38-10,165.65-5,112.91

Finding the Fourth Proportional to 6,781.38, 10,165.65 and 5,112.91

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Solution

The fourth proportional to 6,781.38, 10,165.65 and 5,112.91 is: 7,664.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,781.38 : 10,165.65 = 5,112.91 : x
  2. Step 2: Convert to fraction form
    6,781.38/10,165.65 = 5,112.91/x
  3. Step 3: Cross multiply
    6,781.38x = 10,165.65 × 5,112.91
  4. Step 4: Simplify right side
    6,781.38x = 51,976,053.54
  5. Step 5: Solve for x
    x = 51,976,053.54/6,781.38
  6. Step 6: Final answer
    x = 7,664.52

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1.5x scale

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.