Home / 3,905.40-5,389.08-2,227.23

Finding the Fourth Proportional to 3,905.40, 5,389.08 and 2,227.23

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Solution

The fourth proportional to 3,905.40, 5,389.08 and 2,227.23 is: 3,073.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,905.40 : 5,389.08 = 2,227.23 : x
  2. Step 2: Convert to fraction form
    3,905.40/5,389.08 = 2,227.23/x
  3. Step 3: Cross multiply
    3,905.40x = 5,389.08 × 2,227.23
  4. Step 4: Simplify right side
    3,905.40x = 12,002,720.65
  5. Step 5: Solve for x
    x = 12,002,720.65/3,905.40
  6. Step 6: Final answer
    x = 3,073.37

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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.