Home / 5,146.20-7,719.84-1,636.38

Finding the Fourth Proportional to 5,146.20, 7,719.84 and 1,636.38

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Solution

The fourth proportional to 5,146.20, 7,719.84 and 1,636.38 is: 2,454.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,146.20 : 7,719.84 = 1,636.38 : x
  2. Step 2: Convert to fraction form
    5,146.20/7,719.84 = 1,636.38/x
  3. Step 3: Cross multiply
    5,146.20x = 7,719.84 × 1,636.38
  4. Step 4: Simplify right side
    5,146.20x = 12,632,591.78
  5. Step 5: Solve for x
    x = 12,632,591.78/5,146.20
  6. Step 6: Final answer
    x = 2,454.74

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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.