Home / 3,618.20-5,431.26-2,806.28

Finding the Fourth Proportional to 3,618.20, 5,431.26 and 2,806.28

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Solution

The fourth proportional to 3,618.20, 5,431.26 and 2,806.28 is: 4,212.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.20 : 5,431.26 = 2,806.28 : x
  2. Step 2: Convert to fraction form
    3,618.20/5,431.26 = 2,806.28/x
  3. Step 3: Cross multiply
    3,618.20x = 5,431.26 × 2,806.28
  4. Step 4: Simplify right side
    3,618.20x = 15,241,636.31
  5. Step 5: Solve for x
    x = 15,241,636.31/3,618.20
  6. Step 6: Final answer
    x = 4,212.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.