Home / 2,221.24-3,065.13-1,226.45

Finding the Fourth Proportional to 2,221.24, 3,065.13 and 1,226.45

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Solution

The fourth proportional to 2,221.24, 3,065.13 and 1,226.45 is: 1,692.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.24 : 3,065.13 = 1,226.45 : x
  2. Step 2: Convert to fraction form
    2,221.24/3,065.13 = 1,226.45/x
  3. Step 3: Cross multiply
    2,221.24x = 3,065.13 × 1,226.45
  4. Step 4: Simplify right side
    2,221.24x = 3,759,228.69
  5. Step 5: Solve for x
    x = 3,759,228.69/2,221.24
  6. Step 6: Final answer
    x = 1,692.40

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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.