Home / 8,169.79-11,279.66-5,659.60

Finding the Fourth Proportional to 8,169.79, 11,279.66 and 5,659.60

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Solution

The fourth proportional to 8,169.79, 11,279.66 and 5,659.60 is: 7,813.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.79 : 11,279.66 = 5,659.60 : x
  2. Step 2: Convert to fraction form
    8,169.79/11,279.66 = 5,659.60/x
  3. Step 3: Cross multiply
    8,169.79x = 11,279.66 × 5,659.60
  4. Step 4: Simplify right side
    8,169.79x = 63,838,296.66
  5. Step 5: Solve for x
    x = 63,838,296.66/8,169.79
  6. Step 6: Final answer
    x = 7,813.95

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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.