Home / 8,069.49-12,103.16-3,138.66

Finding the Fourth Proportional to 8,069.49, 12,103.16 and 3,138.66

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Solution

The fourth proportional to 8,069.49, 12,103.16 and 3,138.66 is: 4,707.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,069.49 : 12,103.16 = 3,138.66 : x
  2. Step 2: Convert to fraction form
    8,069.49/12,103.16 = 3,138.66/x
  3. Step 3: Cross multiply
    8,069.49x = 12,103.16 × 3,138.66
  4. Step 4: Simplify right side
    8,069.49x = 37,987,688.47
  5. Step 5: Solve for x
    x = 37,987,688.47/8,069.49
  6. Step 6: Final answer
    x = 4,707.57

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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.