Home / 3,890.57-5,355.36-3,392.33

Finding the Fourth Proportional to 3,890.57, 5,355.36 and 3,392.33

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Solution

The fourth proportional to 3,890.57, 5,355.36 and 3,392.33 is: 4,669.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.57 : 5,355.36 = 3,392.33 : x
  2. Step 2: Convert to fraction form
    3,890.57/5,355.36 = 3,392.33/x
  3. Step 3: Cross multiply
    3,890.57x = 5,355.36 × 3,392.33
  4. Step 4: Simplify right side
    3,890.57x = 18,167,121.61
  5. Step 5: Solve for x
    x = 18,167,121.61/3,890.57
  6. Step 6: Final answer
    x = 4,669.53

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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.