Home / 2,850.45-3,934.31-1,655.18

Finding the Fourth Proportional to 2,850.45, 3,934.31 and 1,655.18

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Solution

The fourth proportional to 2,850.45, 3,934.31 and 1,655.18 is: 2,284.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.45 : 3,934.31 = 1,655.18 : x
  2. Step 2: Convert to fraction form
    2,850.45/3,934.31 = 1,655.18/x
  3. Step 3: Cross multiply
    2,850.45x = 3,934.31 × 1,655.18
  4. Step 4: Simplify right side
    2,850.45x = 6,511,991.23
  5. Step 5: Solve for x
    x = 6,511,991.23/2,850.45
  6. Step 6: Final answer
    x = 2,284.55

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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.