Home / 2,489.31-3,735.35-929.25

Finding the Fourth Proportional to 2,489.31, 3,735.35 and 929.25

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Solution

The fourth proportional to 2,489.31, 3,735.35 and 929.25 is: 1,394.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.31 : 3,735.35 = 929.25 : x
  2. Step 2: Convert to fraction form
    2,489.31/3,735.35 = 929.25/x
  3. Step 3: Cross multiply
    2,489.31x = 3,735.35 × 929.25
  4. Step 4: Simplify right side
    2,489.31x = 3,471,069.34
  5. Step 5: Solve for x
    x = 3,471,069.34/2,489.31
  6. Step 6: Final answer
    x = 1,394.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.