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Finding the Fourth Proportional to 5,626, 7,763.88 and 3,142

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Solution

The fourth proportional to 5,626, 7,763.88 and 3,142 is: 4,335.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,626 : 7,763.88 = 3,142 : x
  2. Step 2: Convert to fraction form
    5,626/7,763.88 = 3,142/x
  3. Step 3: Cross multiply
    5,626x = 7,763.88 × 3,142
  4. Step 4: Simplify right side
    5,626x = 24,394,110.96
  5. Step 5: Solve for x
    x = 24,394,110.96/5,626
  6. Step 6: Final answer
    x = 4,335.96

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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.