Home / 4,112.56-5,671.38-3,117.88

Finding the Fourth Proportional to 4,112.56, 5,671.38 and 3,117.88

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Solution

The fourth proportional to 4,112.56, 5,671.38 and 3,117.88 is: 4,299.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,112.56 : 5,671.38 = 3,117.88 : x
  2. Step 2: Convert to fraction form
    4,112.56/5,671.38 = 3,117.88/x
  3. Step 3: Cross multiply
    4,112.56x = 5,671.38 × 3,117.88
  4. Step 4: Simplify right side
    4,112.56x = 17,682,682.27
  5. Step 5: Solve for x
    x = 17,682,682.27/4,112.56
  6. Step 6: Final answer
    x = 4,299.68

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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.