Home / 2,775.22-3,830.43-1,891.38

Finding the Fourth Proportional to 2,775.22, 3,830.43 and 1,891.38

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Solution

The fourth proportional to 2,775.22, 3,830.43 and 1,891.38 is: 2,610.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.22 : 3,830.43 = 1,891.38 : x
  2. Step 2: Convert to fraction form
    2,775.22/3,830.43 = 1,891.38/x
  3. Step 3: Cross multiply
    2,775.22x = 3,830.43 × 1,891.38
  4. Step 4: Simplify right side
    2,775.22x = 7,244,798.69
  5. Step 5: Solve for x
    x = 7,244,798.69/2,775.22
  6. Step 6: Final answer
    x = 2,610.53

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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.