Home / 5,515.72-8,275.13-2,231.12

Finding the Fourth Proportional to 5,515.72, 8,275.13 and 2,231.12

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Solution

The fourth proportional to 5,515.72, 8,275.13 and 2,231.12 is: 3,347.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,515.72 : 8,275.13 = 2,231.12 : x
  2. Step 2: Convert to fraction form
    5,515.72/8,275.13 = 2,231.12/x
  3. Step 3: Cross multiply
    5,515.72x = 8,275.13 × 2,231.12
  4. Step 4: Simplify right side
    5,515.72x = 18,462,796.89
  5. Step 5: Solve for x
    x = 18,462,796.89/5,515.72
  6. Step 6: Final answer
    x = 3,347.30

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1.5x scale

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.