Home / 2,775.12-3,832.82-1,889.39

Finding the Fourth Proportional to 2,775.12, 3,832.82 and 1,889.39

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Solution

The fourth proportional to 2,775.12, 3,832.82 and 1,889.39 is: 2,609.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.12 : 3,832.82 = 1,889.39 : x
  2. Step 2: Convert to fraction form
    2,775.12/3,832.82 = 1,889.39/x
  3. Step 3: Cross multiply
    2,775.12x = 3,832.82 × 1,889.39
  4. Step 4: Simplify right side
    2,775.12x = 7,241,663.17
  5. Step 5: Solve for x
    x = 7,241,663.17/2,775.12
  6. Step 6: Final answer
    x = 2,609.50

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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.