Home / 7,231.20-10,840.38-2,851.80

Finding the Fourth Proportional to 7,231.20, 10,840.38 and 2,851.80

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Solution

The fourth proportional to 7,231.20, 10,840.38 and 2,851.80 is: 4,275.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,231.20 : 10,840.38 = 2,851.80 : x
  2. Step 2: Convert to fraction form
    7,231.20/10,840.38 = 2,851.80/x
  3. Step 3: Cross multiply
    7,231.20x = 10,840.38 × 2,851.80
  4. Step 4: Simplify right side
    7,231.20x = 30,914,595.68
  5. Step 5: Solve for x
    x = 30,914,595.68/7,231.20
  6. Step 6: Final answer
    x = 4,275.17

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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.