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Finding the Fourth Proportional to 2,394.17, 3,590.99 and 639.33

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Solution

The fourth proportional to 2,394.17, 3,590.99 and 639.33 is: 958.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,394.17 : 3,590.99 = 639.33 : x
  2. Step 2: Convert to fraction form
    2,394.17/3,590.99 = 639.33/x
  3. Step 3: Cross multiply
    2,394.17x = 3,590.99 × 639.33
  4. Step 4: Simplify right side
    2,394.17x = 2,295,827.03
  5. Step 5: Solve for x
    x = 2,295,827.03/2,394.17
  6. Step 6: Final answer
    x = 958.92

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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.