Home / 3,162.20-4,363.74-1,818.05

Finding the Fourth Proportional to 3,162.20, 4,363.74 and 1,818.05

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Solution

The fourth proportional to 3,162.20, 4,363.74 and 1,818.05 is: 2,508.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,162.20 : 4,363.74 = 1,818.05 : x
  2. Step 2: Convert to fraction form
    3,162.20/4,363.74 = 1,818.05/x
  3. Step 3: Cross multiply
    3,162.20x = 4,363.74 × 1,818.05
  4. Step 4: Simplify right side
    3,162.20x = 7,933,475.69
  5. Step 5: Solve for x
    x = 7,933,475.69/3,162.20
  6. Step 6: Final answer
    x = 2,508.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.