Home / 3,394.15-5,091.21-928.90

Finding the Fourth Proportional to 3,394.15, 5,091.21 and 928.90

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Solution

The fourth proportional to 3,394.15, 5,091.21 and 928.90 is: 1,393.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,394.15 : 5,091.21 = 928.90 : x
  2. Step 2: Convert to fraction form
    3,394.15/5,091.21 = 928.90/x
  3. Step 3: Cross multiply
    3,394.15x = 5,091.21 × 928.90
  4. Step 4: Simplify right side
    3,394.15x = 4,729,224.97
  5. Step 5: Solve for x
    x = 4,729,224.97/3,394.15
  6. Step 6: Final answer
    x = 1,393.35

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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.