Home / 2,221.20-3,065.64-1,634.76

Finding the Fourth Proportional to 2,221.20, 3,065.64 and 1,634.76

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Solution

The fourth proportional to 2,221.20, 3,065.64 and 1,634.76 is: 2,256.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.20 : 3,065.64 = 1,634.76 : x
  2. Step 2: Convert to fraction form
    2,221.20/3,065.64 = 1,634.76/x
  3. Step 3: Cross multiply
    2,221.20x = 3,065.64 × 1,634.76
  4. Step 4: Simplify right side
    2,221.20x = 5,011,585.65
  5. Step 5: Solve for x
    x = 5,011,585.65/2,221.20
  6. Step 6: Final answer
    x = 2,256.25

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Half scale
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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.