Home / 3,837.81-5,296.18-2,181.81

Finding the Fourth Proportional to 3,837.81, 5,296.18 and 2,181.81

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Solution

The fourth proportional to 3,837.81, 5,296.18 and 2,181.81 is: 3,010.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,837.81 : 5,296.18 = 2,181.81 : x
  2. Step 2: Convert to fraction form
    3,837.81/5,296.18 = 2,181.81/x
  3. Step 3: Cross multiply
    3,837.81x = 5,296.18 × 2,181.81
  4. Step 4: Simplify right side
    3,837.81x = 11,555,274.45
  5. Step 5: Solve for x
    x = 11,555,274.45/3,837.81
  6. Step 6: Final answer
    x = 3,010.90

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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.