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Finding the Fourth Proportional to 4,392.34, 6,590.04 and 2,638.34

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Solution

The fourth proportional to 4,392.34, 6,590.04 and 2,638.34 is: 3,958.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,392.34 : 6,590.04 = 2,638.34 : x
  2. Step 2: Convert to fraction form
    4,392.34/6,590.04 = 2,638.34/x
  3. Step 3: Cross multiply
    4,392.34x = 6,590.04 × 2,638.34
  4. Step 4: Simplify right side
    4,392.34x = 17,386,766.13
  5. Step 5: Solve for x
    x = 17,386,766.13/4,392.34
  6. Step 6: Final answer
    x = 3,958.43

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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.