Home / 5,170.50-7,134.98-2,812.62

Finding the Fourth Proportional to 5,170.50, 7,134.98 and 2,812.62

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Solution

The fourth proportional to 5,170.50, 7,134.98 and 2,812.62 is: 3,881.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.50 : 7,134.98 = 2,812.62 : x
  2. Step 2: Convert to fraction form
    5,170.50/7,134.98 = 2,812.62/x
  3. Step 3: Cross multiply
    5,170.50x = 7,134.98 × 2,812.62
  4. Step 4: Simplify right side
    5,170.50x = 20,067,987.45
  5. Step 5: Solve for x
    x = 20,067,987.45/5,170.50
  6. Step 6: Final answer
    x = 3,881.25

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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.