Home / 5,409.29-8,110.45-2,122.72

Finding the Fourth Proportional to 5,409.29, 8,110.45 and 2,122.72

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Solution

The fourth proportional to 5,409.29, 8,110.45 and 2,122.72 is: 3,182.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409.29 : 8,110.45 = 2,122.72 : x
  2. Step 2: Convert to fraction form
    5,409.29/8,110.45 = 2,122.72/x
  3. Step 3: Cross multiply
    5,409.29x = 8,110.45 × 2,122.72
  4. Step 4: Simplify right side
    5,409.29x = 17,216,214.42
  5. Step 5: Solve for x
    x = 17,216,214.42/5,409.29
  6. Step 6: Final answer
    x = 3,182.71

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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.