Home / 8,511.50-12,748.79-4,119.75

Finding the Fourth Proportional to 8,511.50, 12,748.79 and 4,119.75

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Solution

The fourth proportional to 8,511.50, 12,748.79 and 4,119.75 is: 6,170.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,511.50 : 12,748.79 = 4,119.75 : x
  2. Step 2: Convert to fraction form
    8,511.50/12,748.79 = 4,119.75/x
  3. Step 3: Cross multiply
    8,511.50x = 12,748.79 × 4,119.75
  4. Step 4: Simplify right side
    8,511.50x = 52,521,837.90
  5. Step 5: Solve for x
    x = 52,521,837.90/8,511.50
  6. Step 6: Final answer
    x = 6,170.69

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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.