Home / 4,115.68-5,680.26-3,119.31

Finding the Fourth Proportional to 4,115.68, 5,680.26 and 3,119.31

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Solution

The fourth proportional to 4,115.68, 5,680.26 and 3,119.31 is: 4,305.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,115.68 : 5,680.26 = 3,119.31 : x
  2. Step 2: Convert to fraction form
    4,115.68/5,680.26 = 3,119.31/x
  3. Step 3: Cross multiply
    4,115.68x = 5,680.26 × 3,119.31
  4. Step 4: Simplify right side
    4,115.68x = 17,718,491.82
  5. Step 5: Solve for x
    x = 17,718,491.82/4,115.68
  6. Step 6: Final answer
    x = 4,305.12

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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.