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Finding the Fourth Proportional to 8,749, 13,119.18 and 3,201.58

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Solution

The fourth proportional to 8,749, 13,119.18 and 3,201.58 is: 4,800.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749 : 13,119.18 = 3,201.58 : x
  2. Step 2: Convert to fraction form
    8,749/13,119.18 = 3,201.58/x
  3. Step 3: Cross multiply
    8,749x = 13,119.18 × 3,201.58
  4. Step 4: Simplify right side
    8,749x = 42,002,104.30
  5. Step 5: Solve for x
    x = 42,002,104.30/8,749
  6. Step 6: Final answer
    x = 4,800.79

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1.5x scale

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.