Home / 3,170.10-4,371.91-2,640.75

Finding the Fourth Proportional to 3,170.10, 4,371.91 and 2,640.75

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Solution

The fourth proportional to 3,170.10, 4,371.91 and 2,640.75 is: 3,641.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.10 : 4,371.91 = 2,640.75 : x
  2. Step 2: Convert to fraction form
    3,170.10/4,371.91 = 2,640.75/x
  3. Step 3: Cross multiply
    3,170.10x = 4,371.91 × 2,640.75
  4. Step 4: Simplify right side
    3,170.10x = 11,545,098.34
  5. Step 5: Solve for x
    x = 11,545,098.34/3,170.10
  6. Step 6: Final answer
    x = 3,641.87

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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.