Home / 3,229.60-4,455.70-2,111.18

Finding the Fourth Proportional to 3,229.60, 4,455.70 and 2,111.18

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Solution

The fourth proportional to 3,229.60, 4,455.70 and 2,111.18 is: 2,912.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,229.60 : 4,455.70 = 2,111.18 : x
  2. Step 2: Convert to fraction form
    3,229.60/4,455.70 = 2,111.18/x
  3. Step 3: Cross multiply
    3,229.60x = 4,455.70 × 2,111.18
  4. Step 4: Simplify right side
    3,229.60x = 9,406,795.87
  5. Step 5: Solve for x
    x = 9,406,795.87/3,229.60
  6. Step 6: Final answer
    x = 2,912.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.