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Finding the Fourth Proportional to 6,613.02, 9,921.15 and 2,718.54

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Solution

The fourth proportional to 6,613.02, 9,921.15 and 2,718.54 is: 4,078.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.02 : 9,921.15 = 2,718.54 : x
  2. Step 2: Convert to fraction form
    6,613.02/9,921.15 = 2,718.54/x
  3. Step 3: Cross multiply
    6,613.02x = 9,921.15 × 2,718.54
  4. Step 4: Simplify right side
    6,613.02x = 26,971,043.12
  5. Step 5: Solve for x
    x = 26,971,043.12/6,613.02
  6. Step 6: Final answer
    x = 4,078.48

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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.