Home / 7,218.27-9,961.05-4,031.43

Finding the Fourth Proportional to 7,218.27, 9,961.05 and 4,031.43

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Solution

The fourth proportional to 7,218.27, 9,961.05 and 4,031.43 is: 5,563.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.27 : 9,961.05 = 4,031.43 : x
  2. Step 2: Convert to fraction form
    7,218.27/9,961.05 = 4,031.43/x
  3. Step 3: Cross multiply
    7,218.27x = 9,961.05 × 4,031.43
  4. Step 4: Simplify right side
    7,218.27x = 40,157,275.80
  5. Step 5: Solve for x
    x = 40,157,275.80/7,218.27
  6. Step 6: Final answer
    x = 5,563.28

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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.