Home / 2,219.69-3,330.11-758.86

Finding the Fourth Proportional to 2,219.69, 3,330.11 and 758.86

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Solution

The fourth proportional to 2,219.69, 3,330.11 and 758.86 is: 1,138.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,219.69 : 3,330.11 = 758.86 : x
  2. Step 2: Convert to fraction form
    2,219.69/3,330.11 = 758.86/x
  3. Step 3: Cross multiply
    2,219.69x = 3,330.11 × 758.86
  4. Step 4: Simplify right side
    2,219.69x = 2,527,080.85
  5. Step 5: Solve for x
    x = 2,527,080.85/2,219.69
  6. Step 6: Final answer
    x = 1,138.48

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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.