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Finding the Fourth Proportional to 2,496.74, 3,745.47 and 765.50

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Solution

The fourth proportional to 2,496.74, 3,745.47 and 765.50 is: 1,148.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,496.74 : 3,745.47 = 765.50 : x
  2. Step 2: Convert to fraction form
    2,496.74/3,745.47 = 765.50/x
  3. Step 3: Cross multiply
    2,496.74x = 3,745.47 × 765.50
  4. Step 4: Simplify right side
    2,496.74x = 2,867,157.29
  5. Step 5: Solve for x
    x = 2,867,157.29/2,496.74
  6. Step 6: Final answer
    x = 1,148.36

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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.