Home / 8,069.88-12,110.36-3,139.56

Finding the Fourth Proportional to 8,069.88, 12,110.36 and 3,139.56

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Solution

The fourth proportional to 8,069.88, 12,110.36 and 3,139.56 is: 4,711.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,069.88 : 12,110.36 = 3,139.56 : x
  2. Step 2: Convert to fraction form
    8,069.88/12,110.36 = 3,139.56/x
  3. Step 3: Cross multiply
    8,069.88x = 12,110.36 × 3,139.56
  4. Step 4: Simplify right side
    8,069.88x = 38,021,203.80
  5. Step 5: Solve for x
    x = 38,021,203.80/8,069.88
  6. Step 6: Final answer
    x = 4,711.50

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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.