Home / 2,231.80-3,350.40-2,215.60

Finding the Fourth Proportional to 2,231.80, 3,350.40 and 2,215.60

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Solution

The fourth proportional to 2,231.80, 3,350.40 and 2,215.60 is: 3,326.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,231.80 : 3,350.40 = 2,215.60 : x
  2. Step 2: Convert to fraction form
    2,231.80/3,350.40 = 2,215.60/x
  3. Step 3: Cross multiply
    2,231.80x = 3,350.40 × 2,215.60
  4. Step 4: Simplify right side
    2,231.80x = 7,423,146.24
  5. Step 5: Solve for x
    x = 7,423,146.24/2,231.80
  6. Step 6: Final answer
    x = 3,326.08

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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.