Home / 5,170.40-7,135.15-2,812.54

Finding the Fourth Proportional to 5,170.40, 7,135.15 and 2,812.54

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Solution

The fourth proportional to 5,170.40, 7,135.15 and 2,812.54 is: 3,881.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.40 : 7,135.15 = 2,812.54 : x
  2. Step 2: Convert to fraction form
    5,170.40/7,135.15 = 2,812.54/x
  3. Step 3: Cross multiply
    5,170.40x = 7,135.15 × 2,812.54
  4. Step 4: Simplify right side
    5,170.40x = 20,067,894.78
  5. Step 5: Solve for x
    x = 20,067,894.78/5,170.40
  6. Step 6: Final answer
    x = 3,881.30

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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.