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Finding the Fourth Proportional to 2,713.10, 4,069.48 and 865.54

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Solution

The fourth proportional to 2,713.10, 4,069.48 and 865.54 is: 1,298.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,713.10 : 4,069.48 = 865.54 : x
  2. Step 2: Convert to fraction form
    2,713.10/4,069.48 = 865.54/x
  3. Step 3: Cross multiply
    2,713.10x = 4,069.48 × 865.54
  4. Step 4: Simplify right side
    2,713.10x = 3,522,297.72
  5. Step 5: Solve for x
    x = 3,522,297.72/2,713.10
  6. Step 6: Final answer
    x = 1,298.26

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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.