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Finding the Fourth Proportional to 3,349.88, 4,624.36 and 2,155.43

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Solution

The fourth proportional to 3,349.88, 4,624.36 and 2,155.43 is: 2,975.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,349.88 : 4,624.36 = 2,155.43 : x
  2. Step 2: Convert to fraction form
    3,349.88/4,624.36 = 2,155.43/x
  3. Step 3: Cross multiply
    3,349.88x = 4,624.36 × 2,155.43
  4. Step 4: Simplify right side
    3,349.88x = 9,967,490.45
  5. Step 5: Solve for x
    x = 9,967,490.45/3,349.88
  6. Step 6: Final answer
    x = 2,975.48

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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.