Home / 3,878.60-5,352.36-2,110.28

Finding the Fourth Proportional to 3,878.60, 5,352.36 and 2,110.28

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Solution

The fourth proportional to 3,878.60, 5,352.36 and 2,110.28 is: 2,912.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.60 : 5,352.36 = 2,110.28 : x
  2. Step 2: Convert to fraction form
    3,878.60/5,352.36 = 2,110.28/x
  3. Step 3: Cross multiply
    3,878.60x = 5,352.36 × 2,110.28
  4. Step 4: Simplify right side
    3,878.60x = 11,294,978.26
  5. Step 5: Solve for x
    x = 11,294,978.26/3,878.60
  6. Step 6: Final answer
    x = 2,912.13

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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.