Home / 4,112.16-5,672.68-3,115.68

Finding the Fourth Proportional to 4,112.16, 5,672.68 and 3,115.68

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Solution

The fourth proportional to 4,112.16, 5,672.68 and 3,115.68 is: 4,298.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,112.16 : 5,672.68 = 3,115.68 : x
  2. Step 2: Convert to fraction form
    4,112.16/5,672.68 = 3,115.68/x
  3. Step 3: Cross multiply
    4,112.16x = 5,672.68 × 3,115.68
  4. Step 4: Simplify right side
    4,112.16x = 17,674,255.62
  5. Step 5: Solve for x
    x = 17,674,255.62/4,112.16
  6. Step 6: Final answer
    x = 4,298.05

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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.