Home / 5,627.31-7,765.94-3,109.43

Finding the Fourth Proportional to 5,627.31, 7,765.94 and 3,109.43

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Solution

The fourth proportional to 5,627.31, 7,765.94 and 3,109.43 is: 4,291.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,627.31 : 7,765.94 = 3,109.43 : x
  2. Step 2: Convert to fraction form
    5,627.31/7,765.94 = 3,109.43/x
  3. Step 3: Cross multiply
    5,627.31x = 7,765.94 × 3,109.43
  4. Step 4: Simplify right side
    5,627.31x = 24,147,646.81
  5. Step 5: Solve for x
    x = 24,147,646.81/5,627.31
  6. Step 6: Final answer
    x = 4,291.15

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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.