Home / 2,612.20-3,913.18-1,996.52

Finding the Fourth Proportional to 2,612.20, 3,913.18 and 1,996.52

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Solution

The fourth proportional to 2,612.20, 3,913.18 and 1,996.52 is: 2,990.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,612.20 : 3,913.18 = 1,996.52 : x
  2. Step 2: Convert to fraction form
    2,612.20/3,913.18 = 1,996.52/x
  3. Step 3: Cross multiply
    2,612.20x = 3,913.18 × 1,996.52
  4. Step 4: Simplify right side
    2,612.20x = 7,812,742.13
  5. Step 5: Solve for x
    x = 7,812,742.13/2,612.20
  6. Step 6: Final answer
    x = 2,990.87

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1.5x scale

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.