Home / 4,090.78-5,645.31-2,227.78

Finding the Fourth Proportional to 4,090.78, 5,645.31 and 2,227.78

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Solution

The fourth proportional to 4,090.78, 5,645.31 and 2,227.78 is: 3,074.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,090.78 : 5,645.31 = 2,227.78 : x
  2. Step 2: Convert to fraction form
    4,090.78/5,645.31 = 2,227.78/x
  3. Step 3: Cross multiply
    4,090.78x = 5,645.31 × 2,227.78
  4. Step 4: Simplify right side
    4,090.78x = 12,576,508.71
  5. Step 5: Solve for x
    x = 12,576,508.71/4,090.78
  6. Step 6: Final answer
    x = 3,074.35

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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.