Home / 4,170.70-5,755.17-2,491.78

Finding the Fourth Proportional to 4,170.70, 5,755.17 and 2,491.78

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Solution

The fourth proportional to 4,170.70, 5,755.17 and 2,491.78 is: 3,438.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,170.70 : 5,755.17 = 2,491.78 : x
  2. Step 2: Convert to fraction form
    4,170.70/5,755.17 = 2,491.78/x
  3. Step 3: Cross multiply
    4,170.70x = 5,755.17 × 2,491.78
  4. Step 4: Simplify right side
    4,170.70x = 14,340,617.50
  5. Step 5: Solve for x
    x = 14,340,617.50/4,170.70
  6. Step 6: Final answer
    x = 3,438.42

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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.