Home / 2,221.76-3,065.94-1,227.08

Finding the Fourth Proportional to 2,221.76, 3,065.94 and 1,227.08

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Solution

The fourth proportional to 2,221.76, 3,065.94 and 1,227.08 is: 1,693.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.76 : 3,065.94 = 1,227.08 : x
  2. Step 2: Convert to fraction form
    2,221.76/3,065.94 = 1,227.08/x
  3. Step 3: Cross multiply
    2,221.76x = 3,065.94 × 1,227.08
  4. Step 4: Simplify right side
    2,221.76x = 3,762,138.33
  5. Step 5: Solve for x
    x = 3,762,138.33/2,221.76
  6. Step 6: Final answer
    x = 1,693.32

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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.