Home / 2,217.15-3,325.85-830.85

Finding the Fourth Proportional to 2,217.15, 3,325.85 and 830.85

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Solution

The fourth proportional to 2,217.15, 3,325.85 and 830.85 is: 1,246.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.15 : 3,325.85 = 830.85 : x
  2. Step 2: Convert to fraction form
    2,217.15/3,325.85 = 830.85/x
  3. Step 3: Cross multiply
    2,217.15x = 3,325.85 × 830.85
  4. Step 4: Simplify right side
    2,217.15x = 2,763,282.47
  5. Step 5: Solve for x
    x = 2,763,282.47/2,217.15
  6. Step 6: Final answer
    x = 1,246.32

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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.