Home / 3,878.96-5,353.02-2,110.66

Finding the Fourth Proportional to 3,878.96, 5,353.02 and 2,110.66

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Solution

The fourth proportional to 3,878.96, 5,353.02 and 2,110.66 is: 2,912.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.96 : 5,353.02 = 2,110.66 : x
  2. Step 2: Convert to fraction form
    3,878.96/5,353.02 = 2,110.66/x
  3. Step 3: Cross multiply
    3,878.96x = 5,353.02 × 2,110.66
  4. Step 4: Simplify right side
    3,878.96x = 11,298,391.81
  5. Step 5: Solve for x
    x = 11,298,391.81/3,878.96
  6. Step 6: Final answer
    x = 2,912.74

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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.