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Finding the Fourth Proportional to 2,393.52, 3,590.43 and 638.49

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Solution

The fourth proportional to 2,393.52, 3,590.43 and 638.49 is: 957.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,393.52 : 3,590.43 = 638.49 : x
  2. Step 2: Convert to fraction form
    2,393.52/3,590.43 = 638.49/x
  3. Step 3: Cross multiply
    2,393.52x = 3,590.43 × 638.49
  4. Step 4: Simplify right side
    2,393.52x = 2,292,453.65
  5. Step 5: Solve for x
    x = 2,292,453.65/2,393.52
  6. Step 6: Final answer
    x = 957.78

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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.