Home / 3,857.54-5,323.73-2,178.95

Finding the Fourth Proportional to 3,857.54, 5,323.73 and 2,178.95

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Solution

The fourth proportional to 3,857.54, 5,323.73 and 2,178.95 is: 3,007.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.54 : 5,323.73 = 2,178.95 : x
  2. Step 2: Convert to fraction form
    3,857.54/5,323.73 = 2,178.95/x
  3. Step 3: Cross multiply
    3,857.54x = 5,323.73 × 2,178.95
  4. Step 4: Simplify right side
    3,857.54x = 11,600,103.97
  5. Step 5: Solve for x
    x = 11,600,103.97/3,857.54
  6. Step 6: Final answer
    x = 3,007.13

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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.