Home / 3,612.18-5,411.24-2,221.40

Finding the Fourth Proportional to 3,612.18, 5,411.24 and 2,221.40

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Solution

The fourth proportional to 3,612.18, 5,411.24 and 2,221.40 is: 3,327.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.18 : 5,411.24 = 2,221.40 : x
  2. Step 2: Convert to fraction form
    3,612.18/5,411.24 = 2,221.40/x
  3. Step 3: Cross multiply
    3,612.18x = 5,411.24 × 2,221.40
  4. Step 4: Simplify right side
    3,612.18x = 12,020,528.54
  5. Step 5: Solve for x
    x = 12,020,528.54/3,612.18
  6. Step 6: Final answer
    x = 3,327.78

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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.