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Finding the Fourth Proportional to 2,618.88, 3,613.92 and 1,500

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Solution

The fourth proportional to 2,618.88, 3,613.92 and 1,500 is: 2,069.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.88 : 3,613.92 = 1,500 : x
  2. Step 2: Convert to fraction form
    2,618.88/3,613.92 = 1,500/x
  3. Step 3: Cross multiply
    2,618.88x = 3,613.92 × 1,500
  4. Step 4: Simplify right side
    2,618.88x = 5,420,880
  5. Step 5: Solve for x
    x = 5,420,880/2,618.88
  6. Step 6: Final answer
    x = 2,069.92

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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.