Home / 12,775.82-19,158.75-3,889.22

Finding the Fourth Proportional to 12,775.82, 19,158.75 and 3,889.22

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Solution

The fourth proportional to 12,775.82, 19,158.75 and 3,889.22 is: 5,832.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.82 : 19,158.75 = 3,889.22 : x
  2. Step 2: Convert to fraction form
    12,775.82/19,158.75 = 3,889.22/x
  3. Step 3: Cross multiply
    12,775.82x = 19,158.75 × 3,889.22
  4. Step 4: Simplify right side
    12,775.82x = 74,512,593.68
  5. Step 5: Solve for x
    x = 74,512,593.68/12,775.82
  6. Step 6: Final answer
    x = 5,832.31

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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.