Home / 2,220.05-3,330.38-758.81

Finding the Fourth Proportional to 2,220.05, 3,330.38 and 758.81

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Solution

The fourth proportional to 2,220.05, 3,330.38 and 758.81 is: 1,138.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.05 : 3,330.38 = 758.81 : x
  2. Step 2: Convert to fraction form
    2,220.05/3,330.38 = 758.81/x
  3. Step 3: Cross multiply
    2,220.05x = 3,330.38 × 758.81
  4. Step 4: Simplify right side
    2,220.05x = 2,527,135.87
  5. Step 5: Solve for x
    x = 2,527,135.87/2,220.05
  6. Step 6: Final answer
    x = 1,138.32

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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.