Home / 3,878.54-5,352.45-2,199.92

Finding the Fourth Proportional to 3,878.54, 5,352.45 and 2,199.92

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Solution

The fourth proportional to 3,878.54, 5,352.45 and 2,199.92 is: 3,035.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.54 : 5,352.45 = 2,199.92 : x
  2. Step 2: Convert to fraction form
    3,878.54/5,352.45 = 2,199.92/x
  3. Step 3: Cross multiply
    3,878.54x = 5,352.45 × 2,199.92
  4. Step 4: Simplify right side
    3,878.54x = 11,774,935.04
  5. Step 5: Solve for x
    x = 11,774,935.04/3,878.54
  6. Step 6: Final answer
    x = 3,035.92

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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.