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Finding the Fourth Proportional to 6,718.85, 10,079.14 and 2,214.40

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Solution

The fourth proportional to 6,718.85, 10,079.14 and 2,214.40 is: 3,321.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,718.85 : 10,079.14 = 2,214.40 : x
  2. Step 2: Convert to fraction form
    6,718.85/10,079.14 = 2,214.40/x
  3. Step 3: Cross multiply
    6,718.85x = 10,079.14 × 2,214.40
  4. Step 4: Simplify right side
    6,718.85x = 22,319,242.08
  5. Step 5: Solve for x
    x = 22,319,242.08/6,718.85
  6. Step 6: Final answer
    x = 3,321.88

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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.