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Finding the Fourth Proportional to 2,678.60, 3,694.42 and 2,327.88

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Solution

The fourth proportional to 2,678.60, 3,694.42 and 2,327.88 is: 3,210.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.60 : 3,694.42 = 2,327.88 : x
  2. Step 2: Convert to fraction form
    2,678.60/3,694.42 = 2,327.88/x
  3. Step 3: Cross multiply
    2,678.60x = 3,694.42 × 2,327.88
  4. Step 4: Simplify right side
    2,678.60x = 8,600,166.43
  5. Step 5: Solve for x
    x = 8,600,166.43/2,678.60
  6. Step 6: Final answer
    x = 3,210.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.