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Finding the Fourth Proportional to 2,358.72, 3,543.48 and 1,949.44

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Solution

The fourth proportional to 2,358.72, 3,543.48 and 1,949.44 is: 2,928.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,358.72 : 3,543.48 = 1,949.44 : x
  2. Step 2: Convert to fraction form
    2,358.72/3,543.48 = 1,949.44/x
  3. Step 3: Cross multiply
    2,358.72x = 3,543.48 × 1,949.44
  4. Step 4: Simplify right side
    2,358.72x = 6,907,801.65
  5. Step 5: Solve for x
    x = 6,907,801.65/2,358.72
  6. Step 6: Final answer
    x = 2,928.62

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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.