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Finding the Fourth Proportional to 3,028.79, 4,538.32 and 2,915

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Solution

The fourth proportional to 3,028.79, 4,538.32 and 2,915 is: 4,367.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,028.79 : 4,538.32 = 2,915 : x
  2. Step 2: Convert to fraction form
    3,028.79/4,538.32 = 2,915/x
  3. Step 3: Cross multiply
    3,028.79x = 4,538.32 × 2,915
  4. Step 4: Simplify right side
    3,028.79x = 13,229,202.80
  5. Step 5: Solve for x
    x = 13,229,202.80/3,028.79
  6. Step 6: Final answer
    x = 4,367.82

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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.