Home / 7,218.15-9,961.49-4,031.44

Finding the Fourth Proportional to 7,218.15, 9,961.49 and 4,031.44

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Solution

The fourth proportional to 7,218.15, 9,961.49 and 4,031.44 is: 5,563.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.15 : 9,961.49 = 4,031.44 : x
  2. Step 2: Convert to fraction form
    7,218.15/9,961.49 = 4,031.44/x
  3. Step 3: Cross multiply
    7,218.15x = 9,961.49 × 4,031.44
  4. Step 4: Simplify right side
    7,218.15x = 40,159,149.25
  5. Step 5: Solve for x
    x = 40,159,149.25/7,218.15
  6. Step 6: Final answer
    x = 5,563.63

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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.