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Finding the Fourth Proportional to 3,480.79, 5,215.10 and 2,899.52

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Solution

The fourth proportional to 3,480.79, 5,215.10 and 2,899.52 is: 4,344.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.79 : 5,215.10 = 2,899.52 : x
  2. Step 2: Convert to fraction form
    3,480.79/5,215.10 = 2,899.52/x
  3. Step 3: Cross multiply
    3,480.79x = 5,215.10 × 2,899.52
  4. Step 4: Simplify right side
    3,480.79x = 15,121,286.75
  5. Step 5: Solve for x
    x = 15,121,286.75/3,480.79
  6. Step 6: Final answer
    x = 4,344.21

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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.