Home / 2,216.90-3,325.35-830.38

Finding the Fourth Proportional to 2,216.90, 3,325.35 and 830.38

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Solution

The fourth proportional to 2,216.90, 3,325.35 and 830.38 is: 1,245.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.90 : 3,325.35 = 830.38 : x
  2. Step 2: Convert to fraction form
    2,216.90/3,325.35 = 830.38/x
  3. Step 3: Cross multiply
    2,216.90x = 3,325.35 × 830.38
  4. Step 4: Simplify right side
    2,216.90x = 2,761,304.13
  5. Step 5: Solve for x
    x = 2,761,304.13/2,216.90
  6. Step 6: Final answer
    x = 1,245.57

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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.