Home / 3,712.26-5,115.69-2,769.12

Finding the Fourth Proportional to 3,712.26, 5,115.69 and 2,769.12

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Solution

The fourth proportional to 3,712.26, 5,115.69 and 2,769.12 is: 3,815.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.26 : 5,115.69 = 2,769.12 : x
  2. Step 2: Convert to fraction form
    3,712.26/5,115.69 = 2,769.12/x
  3. Step 3: Cross multiply
    3,712.26x = 5,115.69 × 2,769.12
  4. Step 4: Simplify right side
    3,712.26x = 14,165,959.49
  5. Step 5: Solve for x
    x = 14,165,959.49/3,712.26
  6. Step 6: Final answer
    x = 3,815.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.