Home / 3,914.87-5,402.90-2,236.55

Finding the Fourth Proportional to 3,914.87, 5,402.90 and 2,236.55

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Solution

The fourth proportional to 3,914.87, 5,402.90 and 2,236.55 is: 3,086.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.87 : 5,402.90 = 2,236.55 : x
  2. Step 2: Convert to fraction form
    3,914.87/5,402.90 = 2,236.55/x
  3. Step 3: Cross multiply
    3,914.87x = 5,402.90 × 2,236.55
  4. Step 4: Simplify right side
    3,914.87x = 12,083,834.57
  5. Step 5: Solve for x
    x = 12,083,834.57/3,914.87
  6. Step 6: Final answer
    x = 3,086.65

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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.