Home / 3,078.20-4,609.10-2,772.02

Finding the Fourth Proportional to 3,078.20, 4,609.10 and 2,772.02

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Solution

The fourth proportional to 3,078.20, 4,609.10 and 2,772.02 is: 4,150.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.20 : 4,609.10 = 2,772.02 : x
  2. Step 2: Convert to fraction form
    3,078.20/4,609.10 = 2,772.02/x
  3. Step 3: Cross multiply
    3,078.20x = 4,609.10 × 2,772.02
  4. Step 4: Simplify right side
    3,078.20x = 12,776,535.83
  5. Step 5: Solve for x
    x = 12,776,535.83/3,078.20
  6. Step 6: Final answer
    x = 4,150.65

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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.