Home / 5,170.90-7,135.87-2,813.06

Finding the Fourth Proportional to 5,170.90, 7,135.87 and 2,813.06

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Solution

The fourth proportional to 5,170.90, 7,135.87 and 2,813.06 is: 3,882.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.90 : 7,135.87 = 2,813.06 : x
  2. Step 2: Convert to fraction form
    5,170.90/7,135.87 = 2,813.06/x
  3. Step 3: Cross multiply
    5,170.90x = 7,135.87 × 2,813.06
  4. Step 4: Simplify right side
    5,170.90x = 20,073,630.46
  5. Step 5: Solve for x
    x = 20,073,630.46/5,170.90
  6. Step 6: Final answer
    x = 3,882.04

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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.