Home / 2,212.35-3,320.07-913.83

Finding the Fourth Proportional to 2,212.35, 3,320.07 and 913.83

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Solution

The fourth proportional to 2,212.35, 3,320.07 and 913.83 is: 1,371.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.35 : 3,320.07 = 913.83 : x
  2. Step 2: Convert to fraction form
    2,212.35/3,320.07 = 913.83/x
  3. Step 3: Cross multiply
    2,212.35x = 3,320.07 × 913.83
  4. Step 4: Simplify right side
    2,212.35x = 3,033,979.57
  5. Step 5: Solve for x
    x = 3,033,979.57/2,212.35
  6. Step 6: Final answer
    x = 1,371.38

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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.