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Finding the Fourth Proportional to 7,079.54, 10,619.30 and 2,638.17

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Solution

The fourth proportional to 7,079.54, 10,619.30 and 2,638.17 is: 3,957.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079.54 : 10,619.30 = 2,638.17 : x
  2. Step 2: Convert to fraction form
    7,079.54/10,619.30 = 2,638.17/x
  3. Step 3: Cross multiply
    7,079.54x = 10,619.30 × 2,638.17
  4. Step 4: Simplify right side
    7,079.54x = 28,015,525.28
  5. Step 5: Solve for x
    x = 28,015,525.28/7,079.54
  6. Step 6: Final answer
    x = 3,957.26

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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.