Home / 4,121.42-5,690.82-3,806.56

Finding the Fourth Proportional to 4,121.42, 5,690.82 and 3,806.56

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Solution

The fourth proportional to 4,121.42, 5,690.82 and 3,806.56 is: 5,256.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,121.42 : 5,690.82 = 3,806.56 : x
  2. Step 2: Convert to fraction form
    4,121.42/5,690.82 = 3,806.56/x
  3. Step 3: Cross multiply
    4,121.42x = 5,690.82 × 3,806.56
  4. Step 4: Simplify right side
    4,121.42x = 21,662,400.29
  5. Step 5: Solve for x
    x = 21,662,400.29/4,121.42
  6. Step 6: Final answer
    x = 5,256.05

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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.