Home / 5,015.14-7,519.97-3,981.78

Finding the Fourth Proportional to 5,015.14, 7,519.97 and 3,981.78

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Solution

The fourth proportional to 5,015.14, 7,519.97 and 3,981.78 is: 5,970.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.14 : 7,519.97 = 3,981.78 : x
  2. Step 2: Convert to fraction form
    5,015.14/7,519.97 = 3,981.78/x
  3. Step 3: Cross multiply
    5,015.14x = 7,519.97 × 3,981.78
  4. Step 4: Simplify right side
    5,015.14x = 29,942,876.10
  5. Step 5: Solve for x
    x = 29,942,876.10/5,015.14
  6. Step 6: Final answer
    x = 5,970.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.