Home / 3,928.48-5,426.12-2,938.17

Finding the Fourth Proportional to 3,928.48, 5,426.12 and 2,938.17

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Solution

The fourth proportional to 3,928.48, 5,426.12 and 2,938.17 is: 4,058.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,928.48 : 5,426.12 = 2,938.17 : x
  2. Step 2: Convert to fraction form
    3,928.48/5,426.12 = 2,938.17/x
  3. Step 3: Cross multiply
    3,928.48x = 5,426.12 × 2,938.17
  4. Step 4: Simplify right side
    3,928.48x = 15,942,863.00
  5. Step 5: Solve for x
    x = 15,942,863.00/3,928.48
  6. Step 6: Final answer
    x = 4,058.28

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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.