Home / 2,191.79-3,291.64-1,371.67

Finding the Fourth Proportional to 2,191.79, 3,291.64 and 1,371.67

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Solution

The fourth proportional to 2,191.79, 3,291.64 and 1,371.67 is: 2,059.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.79 : 3,291.64 = 1,371.67 : x
  2. Step 2: Convert to fraction form
    2,191.79/3,291.64 = 1,371.67/x
  3. Step 3: Cross multiply
    2,191.79x = 3,291.64 × 1,371.67
  4. Step 4: Simplify right side
    2,191.79x = 4,515,032.18
  5. Step 5: Solve for x
    x = 4,515,032.18/2,191.79
  6. Step 6: Final answer
    x = 2,059.97

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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.