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Finding the Fourth Proportional to 2,693.25, 4,039.88 and 745.47

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Solution

The fourth proportional to 2,693.25, 4,039.88 and 745.47 is: 1,118.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,693.25 : 4,039.88 = 745.47 : x
  2. Step 2: Convert to fraction form
    2,693.25/4,039.88 = 745.47/x
  3. Step 3: Cross multiply
    2,693.25x = 4,039.88 × 745.47
  4. Step 4: Simplify right side
    2,693.25x = 3,011,605.62
  5. Step 5: Solve for x
    x = 3,011,605.62/2,693.25
  6. Step 6: Final answer
    x = 1,118.21

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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.