Home / 2,221.21-3,065.34-1,226.52

Finding the Fourth Proportional to 2,221.21, 3,065.34 and 1,226.52

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Solution

The fourth proportional to 2,221.21, 3,065.34 and 1,226.52 is: 1,692.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.21 : 3,065.34 = 1,226.52 : x
  2. Step 2: Convert to fraction form
    2,221.21/3,065.34 = 1,226.52/x
  3. Step 3: Cross multiply
    2,221.21x = 3,065.34 × 1,226.52
  4. Step 4: Simplify right side
    2,221.21x = 3,759,700.82
  5. Step 5: Solve for x
    x = 3,759,700.82/2,221.21
  6. Step 6: Final answer
    x = 1,692.64

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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.