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Finding the Fourth Proportional to 2,179.68, 3,269.06 and 718.49

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Solution

The fourth proportional to 2,179.68, 3,269.06 and 718.49 is: 1,077.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.68 : 3,269.06 = 718.49 : x
  2. Step 2: Convert to fraction form
    2,179.68/3,269.06 = 718.49/x
  3. Step 3: Cross multiply
    2,179.68x = 3,269.06 × 718.49
  4. Step 4: Simplify right side
    2,179.68x = 2,348,766.98
  5. Step 5: Solve for x
    x = 2,348,766.98/2,179.68
  6. Step 6: Final answer
    x = 1,077.58

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1.5x scale

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.