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Finding the Fourth Proportional to 7,079.08, 10,620 and 2,696.20

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Solution

The fourth proportional to 7,079.08, 10,620 and 2,696.20 is: 4,044.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079.08 : 10,620 = 2,696.20 : x
  2. Step 2: Convert to fraction form
    7,079.08/10,620 = 2,696.20/x
  3. Step 3: Cross multiply
    7,079.08x = 10,620 × 2,696.20
  4. Step 4: Simplify right side
    7,079.08x = 28,633,644.00
  5. Step 5: Solve for x
    x = 28,633,644.00/7,079.08
  6. Step 6: Final answer
    x = 4,044.83

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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.