Home / 3,878.54-5,352.40-2,110.15

Finding the Fourth Proportional to 3,878.54, 5,352.40 and 2,110.15

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Solution

The fourth proportional to 3,878.54, 5,352.40 and 2,110.15 is: 2,912.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.54 : 5,352.40 = 2,110.15 : x
  2. Step 2: Convert to fraction form
    3,878.54/5,352.40 = 2,110.15/x
  3. Step 3: Cross multiply
    3,878.54x = 5,352.40 × 2,110.15
  4. Step 4: Simplify right side
    3,878.54x = 11,294,356.12
  5. Step 5: Solve for x
    x = 11,294,356.12/3,878.54
  6. Step 6: Final answer
    x = 2,912.01

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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.