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Finding the Fourth Proportional to 5,079.64, 7,620.66 and 1,616.89

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Solution

The fourth proportional to 5,079.64, 7,620.66 and 1,616.89 is: 2,425.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,079.64 : 7,620.66 = 1,616.89 : x
  2. Step 2: Convert to fraction form
    5,079.64/7,620.66 = 1,616.89/x
  3. Step 3: Cross multiply
    5,079.64x = 7,620.66 × 1,616.89
  4. Step 4: Simplify right side
    5,079.64x = 12,321,768.95
  5. Step 5: Solve for x
    x = 12,321,768.95/5,079.64
  6. Step 6: Final answer
    x = 2,425.72

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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.