Home / 3,914.76-5,402.35-2,122.29

Finding the Fourth Proportional to 3,914.76, 5,402.35 and 2,122.29

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Solution

The fourth proportional to 3,914.76, 5,402.35 and 2,122.29 is: 2,928.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.76 : 5,402.35 = 2,122.29 : x
  2. Step 2: Convert to fraction form
    3,914.76/5,402.35 = 2,122.29/x
  3. Step 3: Cross multiply
    3,914.76x = 5,402.35 × 2,122.29
  4. Step 4: Simplify right side
    3,914.76x = 11,465,353.38
  5. Step 5: Solve for x
    x = 11,465,353.38/3,914.76
  6. Step 6: Final answer
    x = 2,928.75

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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.