Home / 2,135.10-3,200.44-818.54

Finding the Fourth Proportional to 2,135.10, 3,200.44 and 818.54

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Solution

The fourth proportional to 2,135.10, 3,200.44 and 818.54 is: 1,226.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.10 : 3,200.44 = 818.54 : x
  2. Step 2: Convert to fraction form
    2,135.10/3,200.44 = 818.54/x
  3. Step 3: Cross multiply
    2,135.10x = 3,200.44 × 818.54
  4. Step 4: Simplify right side
    2,135.10x = 2,619,688.16
  5. Step 5: Solve for x
    x = 2,619,688.16/2,135.10
  6. Step 6: Final answer
    x = 1,226.96

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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.