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Finding the Fourth Proportional to 2,712.70, 4,069.68 and 1,069.12

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Solution

The fourth proportional to 2,712.70, 4,069.68 and 1,069.12 is: 1,603.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,712.70 : 4,069.68 = 1,069.12 : x
  2. Step 2: Convert to fraction form
    2,712.70/4,069.68 = 1,069.12/x
  3. Step 3: Cross multiply
    2,712.70x = 4,069.68 × 1,069.12
  4. Step 4: Simplify right side
    2,712.70x = 4,350,976.28
  5. Step 5: Solve for x
    x = 4,350,976.28/2,712.70
  6. Step 6: Final answer
    x = 1,603.93

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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.