Home / 10,120.39-15,181.05-3,796.78

Finding the Fourth Proportional to 10,120.39, 15,181.05 and 3,796.78

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Solution

The fourth proportional to 10,120.39, 15,181.05 and 3,796.78 is: 5,695.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.39 : 15,181.05 = 3,796.78 : x
  2. Step 2: Convert to fraction form
    10,120.39/15,181.05 = 3,796.78/x
  3. Step 3: Cross multiply
    10,120.39x = 15,181.05 × 3,796.78
  4. Step 4: Simplify right side
    10,120.39x = 57,639,107.02
  5. Step 5: Solve for x
    x = 57,639,107.02/10,120.39
  6. Step 6: Final answer
    x = 5,695.34

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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.