Home / 8,168.88-11,279.40-6,277.47

Finding the Fourth Proportional to 8,168.88, 11,279.40 and 6,277.47

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Solution

The fourth proportional to 8,168.88, 11,279.40 and 6,277.47 is: 8,667.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168.88 : 11,279.40 = 6,277.47 : x
  2. Step 2: Convert to fraction form
    8,168.88/11,279.40 = 6,277.47/x
  3. Step 3: Cross multiply
    8,168.88x = 11,279.40 × 6,277.47
  4. Step 4: Simplify right side
    8,168.88x = 70,806,095.12
  5. Step 5: Solve for x
    x = 70,806,095.12/8,168.88
  6. Step 6: Final answer
    x = 8,667.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.