Home / 8,138.53-12,207.86-3,759.06

Finding the Fourth Proportional to 8,138.53, 12,207.86 and 3,759.06

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Solution

The fourth proportional to 8,138.53, 12,207.86 and 3,759.06 is: 5,638.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.53 : 12,207.86 = 3,759.06 : x
  2. Step 2: Convert to fraction form
    8,138.53/12,207.86 = 3,759.06/x
  3. Step 3: Cross multiply
    8,138.53x = 12,207.86 × 3,759.06
  4. Step 4: Simplify right side
    8,138.53x = 45,890,071.77
  5. Step 5: Solve for x
    x = 45,890,071.77/8,138.53
  6. Step 6: Final answer
    x = 5,638.62

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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.