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Finding the Fourth Proportional to 2,191.01, 3,287.99 and 892.71

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Solution

The fourth proportional to 2,191.01, 3,287.99 and 892.71 is: 1,339.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.01 : 3,287.99 = 892.71 : x
  2. Step 2: Convert to fraction form
    2,191.01/3,287.99 = 892.71/x
  3. Step 3: Cross multiply
    2,191.01x = 3,287.99 × 892.71
  4. Step 4: Simplify right side
    2,191.01x = 2,935,221.55
  5. Step 5: Solve for x
    x = 2,935,221.55/2,191.01
  6. Step 6: Final answer
    x = 1,339.67

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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.