Home / 2,221.28-3,329.58-835.64

Finding the Fourth Proportional to 2,221.28, 3,329.58 and 835.64

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Solution

The fourth proportional to 2,221.28, 3,329.58 and 835.64 is: 1,252.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.28 : 3,329.58 = 835.64 : x
  2. Step 2: Convert to fraction form
    2,221.28/3,329.58 = 835.64/x
  3. Step 3: Cross multiply
    2,221.28x = 3,329.58 × 835.64
  4. Step 4: Simplify right side
    2,221.28x = 2,782,330.23
  5. Step 5: Solve for x
    x = 2,782,330.23/2,221.28
  6. Step 6: Final answer
    x = 1,252.58

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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.