Home / 3,188.20-4,776.54-2,778.60

Finding the Fourth Proportional to 3,188.20, 4,776.54 and 2,778.60

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Solution

The fourth proportional to 3,188.20, 4,776.54 and 2,778.60 is: 4,162.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.20 : 4,776.54 = 2,778.60 : x
  2. Step 2: Convert to fraction form
    3,188.20/4,776.54 = 2,778.60/x
  3. Step 3: Cross multiply
    3,188.20x = 4,776.54 × 2,778.60
  4. Step 4: Simplify right side
    3,188.20x = 13,272,094.04
  5. Step 5: Solve for x
    x = 13,272,094.04/3,188.20
  6. Step 6: Final answer
    x = 4,162.88

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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.