Home / 3,074.20-4,612.80-1,429.90

Finding the Fourth Proportional to 3,074.20, 4,612.80 and 1,429.90

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Solution

The fourth proportional to 3,074.20, 4,612.80 and 1,429.90 is: 2,145.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,074.20 : 4,612.80 = 1,429.90 : x
  2. Step 2: Convert to fraction form
    3,074.20/4,612.80 = 1,429.90/x
  3. Step 3: Cross multiply
    3,074.20x = 4,612.80 × 1,429.90
  4. Step 4: Simplify right side
    3,074.20x = 6,595,842.72
  5. Step 5: Solve for x
    x = 6,595,842.72/3,074.20
  6. Step 6: Final answer
    x = 2,145.55

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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.