Home / 2,225.40-3,338.10-2,209.20

Finding the Fourth Proportional to 2,225.40, 3,338.10 and 2,209.20

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Solution

The fourth proportional to 2,225.40, 3,338.10 and 2,209.20 is: 3,313.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.40 : 3,338.10 = 2,209.20 : x
  2. Step 2: Convert to fraction form
    2,225.40/3,338.10 = 2,209.20/x
  3. Step 3: Cross multiply
    2,225.40x = 3,338.10 × 2,209.20
  4. Step 4: Simplify right side
    2,225.40x = 7,374,530.52
  5. Step 5: Solve for x
    x = 7,374,530.52/2,225.40
  6. Step 6: Final answer
    x = 3,313.80

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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.