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Finding the Fourth Proportional to 2,187.01, 3,279.52 and 626.65

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Solution

The fourth proportional to 2,187.01, 3,279.52 and 626.65 is: 939.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.01 : 3,279.52 = 626.65 : x
  2. Step 2: Convert to fraction form
    2,187.01/3,279.52 = 626.65/x
  3. Step 3: Cross multiply
    2,187.01x = 3,279.52 × 626.65
  4. Step 4: Simplify right side
    2,187.01x = 2,055,120.58
  5. Step 5: Solve for x
    x = 2,055,120.58/2,187.01
  6. Step 6: Final answer
    x = 939.70

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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.