Home / 3,905.92-5,389.56-2,227.40

Finding the Fourth Proportional to 3,905.92, 5,389.56 and 2,227.40

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Solution

The fourth proportional to 3,905.92, 5,389.56 and 2,227.40 is: 3,073.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.92 : 5,389.56 = 2,227.40 : x
  2. Step 2: Convert to fraction form
    3,905.92/5,389.56 = 2,227.40/x
  3. Step 3: Cross multiply
    3,905.92x = 5,389.56 × 2,227.40
  4. Step 4: Simplify right side
    3,905.92x = 12,004,705.94
  5. Step 5: Solve for x
    x = 12,004,705.94/3,905.92
  6. Step 6: Final answer
    x = 3,073.46

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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.