Home / 5,414.95-8,120.38-2,126.25

Finding the Fourth Proportional to 5,414.95, 8,120.38 and 2,126.25

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Solution

The fourth proportional to 5,414.95, 8,120.38 and 2,126.25 is: 3,188.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,414.95 : 8,120.38 = 2,126.25 : x
  2. Step 2: Convert to fraction form
    5,414.95/8,120.38 = 2,126.25/x
  3. Step 3: Cross multiply
    5,414.95x = 8,120.38 × 2,126.25
  4. Step 4: Simplify right side
    5,414.95x = 17,265,950.67
  5. Step 5: Solve for x
    x = 17,265,950.67/5,414.95
  6. Step 6: Final answer
    x = 3,188.57

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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.