Home / 3,486.20-5,234.10-2,756.60

Finding the Fourth Proportional to 3,486.20, 5,234.10 and 2,756.60

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Solution

The fourth proportional to 3,486.20, 5,234.10 and 2,756.60 is: 4,138.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.20 : 5,234.10 = 2,756.60 : x
  2. Step 2: Convert to fraction form
    3,486.20/5,234.10 = 2,756.60/x
  3. Step 3: Cross multiply
    3,486.20x = 5,234.10 × 2,756.60
  4. Step 4: Simplify right side
    3,486.20x = 14,428,320.06
  5. Step 5: Solve for x
    x = 14,428,320.06/3,486.20
  6. Step 6: Final answer
    x = 4,138.70

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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.