Home / 3,837.90-5,296.28-2,181.90

Finding the Fourth Proportional to 3,837.90, 5,296.28 and 2,181.90

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Solution

The fourth proportional to 3,837.90, 5,296.28 and 2,181.90 is: 3,011.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,837.90 : 5,296.28 = 2,181.90 : x
  2. Step 2: Convert to fraction form
    3,837.90/5,296.28 = 2,181.90/x
  3. Step 3: Cross multiply
    3,837.90x = 5,296.28 × 2,181.90
  4. Step 4: Simplify right side
    3,837.90x = 11,555,953.33
  5. Step 5: Solve for x
    x = 11,555,953.33/3,837.90
  6. Step 6: Final answer
    x = 3,011.01

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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.