Home / 2,217.52-3,326.67-919.09

Finding the Fourth Proportional to 2,217.52, 3,326.67 and 919.09

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Solution

The fourth proportional to 2,217.52, 3,326.67 and 919.09 is: 1,378.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.52 : 3,326.67 = 919.09 : x
  2. Step 2: Convert to fraction form
    2,217.52/3,326.67 = 919.09/x
  3. Step 3: Cross multiply
    2,217.52x = 3,326.67 × 919.09
  4. Step 4: Simplify right side
    2,217.52x = 3,057,509.13
  5. Step 5: Solve for x
    x = 3,057,509.13/2,217.52
  6. Step 6: Final answer
    x = 1,378.80

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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.