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Finding the Fourth Proportional to 2,186.54, 3,279.80 and 626.70

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Solution

The fourth proportional to 2,186.54, 3,279.80 and 626.70 is: 940.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.54 : 3,279.80 = 626.70 : x
  2. Step 2: Convert to fraction form
    2,186.54/3,279.80 = 626.70/x
  3. Step 3: Cross multiply
    2,186.54x = 3,279.80 × 626.70
  4. Step 4: Simplify right side
    2,186.54x = 2,055,450.66
  5. Step 5: Solve for x
    x = 2,055,450.66/2,186.54
  6. Step 6: Final answer
    x = 940.05

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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.