Home / 2,221.39-3,065.19-1,226.50

Finding the Fourth Proportional to 2,221.39, 3,065.19 and 1,226.50

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Solution

The fourth proportional to 2,221.39, 3,065.19 and 1,226.50 is: 1,692.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.39 : 3,065.19 = 1,226.50 : x
  2. Step 2: Convert to fraction form
    2,221.39/3,065.19 = 1,226.50/x
  3. Step 3: Cross multiply
    2,221.39x = 3,065.19 × 1,226.50
  4. Step 4: Simplify right side
    2,221.39x = 3,759,455.54
  5. Step 5: Solve for x
    x = 3,759,455.54/2,221.39
  6. Step 6: Final answer
    x = 1,692.39

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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.