Home / 5,248.88-7,243.64-2,891.20

Finding the Fourth Proportional to 5,248.88, 7,243.64 and 2,891.20

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Solution

The fourth proportional to 5,248.88, 7,243.64 and 2,891.20 is: 3,989.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,248.88 : 7,243.64 = 2,891.20 : x
  2. Step 2: Convert to fraction form
    5,248.88/7,243.64 = 2,891.20/x
  3. Step 3: Cross multiply
    5,248.88x = 7,243.64 × 2,891.20
  4. Step 4: Simplify right side
    5,248.88x = 20,942,811.97
  5. Step 5: Solve for x
    x = 20,942,811.97/5,248.88
  6. Step 6: Final answer
    x = 3,989.96

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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.