Home / 7,218.65-9,961.55-4,031.87

Finding the Fourth Proportional to 7,218.65, 9,961.55 and 4,031.87

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Solution

The fourth proportional to 7,218.65, 9,961.55 and 4,031.87 is: 5,563.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.65 : 9,961.55 = 4,031.87 : x
  2. Step 2: Convert to fraction form
    7,218.65/9,961.55 = 4,031.87/x
  3. Step 3: Cross multiply
    7,218.65x = 9,961.55 × 4,031.87
  4. Step 4: Simplify right side
    7,218.65x = 40,163,604.63
  5. Step 5: Solve for x
    x = 40,163,604.63/7,218.65
  6. Step 6: Final answer
    x = 5,563.86

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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.