Home / 5,170.40-7,134.94-2,812.53

Finding the Fourth Proportional to 5,170.40, 7,134.94 and 2,812.53

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Solution

The fourth proportional to 5,170.40, 7,134.94 and 2,812.53 is: 3,881.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.40 : 7,134.94 = 2,812.53 : x
  2. Step 2: Convert to fraction form
    5,170.40/7,134.94 = 2,812.53/x
  3. Step 3: Cross multiply
    5,170.40x = 7,134.94 × 2,812.53
  4. Step 4: Simplify right side
    5,170.40x = 20,067,232.80
  5. Step 5: Solve for x
    x = 20,067,232.80/5,170.40
  6. Step 6: Final answer
    x = 3,881.18

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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.