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Finding the Fourth Proportional to 2,491.88, 3,438.79 and 1,444.55

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Solution

The fourth proportional to 2,491.88, 3,438.79 and 1,444.55 is: 1,993.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.88 : 3,438.79 = 1,444.55 : x
  2. Step 2: Convert to fraction form
    2,491.88/3,438.79 = 1,444.55/x
  3. Step 3: Cross multiply
    2,491.88x = 3,438.79 × 1,444.55
  4. Step 4: Simplify right side
    2,491.88x = 4,967,486.90
  5. Step 5: Solve for x
    x = 4,967,486.90/2,491.88
  6. Step 6: Final answer
    x = 1,993.47

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.