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Finding the Fourth Proportional to 2,191.56, 3,287.36 and 804.92

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Solution

The fourth proportional to 2,191.56, 3,287.36 and 804.92 is: 1,207.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.56 : 3,287.36 = 804.92 : x
  2. Step 2: Convert to fraction form
    2,191.56/3,287.36 = 804.92/x
  3. Step 3: Cross multiply
    2,191.56x = 3,287.36 × 804.92
  4. Step 4: Simplify right side
    2,191.56x = 2,646,061.81
  5. Step 5: Solve for x
    x = 2,646,061.81/2,191.56
  6. Step 6: Final answer
    x = 1,207.39

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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.