Home / 2,912.40-4,370.28-1,745.25

Finding the Fourth Proportional to 2,912.40, 4,370.28 and 1,745.25

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Solution

The fourth proportional to 2,912.40, 4,370.28 and 1,745.25 is: 2,618.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.40 : 4,370.28 = 1,745.25 : x
  2. Step 2: Convert to fraction form
    2,912.40/4,370.28 = 1,745.25/x
  3. Step 3: Cross multiply
    2,912.40x = 4,370.28 × 1,745.25
  4. Step 4: Simplify right side
    2,912.40x = 7,627,231.17
  5. Step 5: Solve for x
    x = 7,627,231.17/2,912.40
  6. Step 6: Final answer
    x = 2,618.88

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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.