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Finding the Fourth Proportional to 2,637.39, 3,956.08 and 994.31

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Solution

The fourth proportional to 2,637.39, 3,956.08 and 994.31 is: 1,491.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,637.39 : 3,956.08 = 994.31 : x
  2. Step 2: Convert to fraction form
    2,637.39/3,956.08 = 994.31/x
  3. Step 3: Cross multiply
    2,637.39x = 3,956.08 × 994.31
  4. Step 4: Simplify right side
    2,637.39x = 3,933,550.12
  5. Step 5: Solve for x
    x = 3,933,550.12/2,637.39
  6. Step 6: Final answer
    x = 1,491.46

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Similar ratio
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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.