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Finding the Fourth Proportional to 2,950.78, 4,072.09 and 1,624.57

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Solution

The fourth proportional to 2,950.78, 4,072.09 and 1,624.57 is: 2,241.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,950.78 : 4,072.09 = 1,624.57 : x
  2. Step 2: Convert to fraction form
    2,950.78/4,072.09 = 1,624.57/x
  3. Step 3: Cross multiply
    2,950.78x = 4,072.09 × 1,624.57
  4. Step 4: Simplify right side
    2,950.78x = 6,615,395.25
  5. Step 5: Solve for x
    x = 6,615,395.25/2,950.78
  6. Step 6: Final answer
    x = 2,241.91

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Why These Related Problems?

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