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Finding the Fourth Proportional to 7,659.33, 11,479.77 and 3,959.57

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Solution

The fourth proportional to 7,659.33, 11,479.77 and 3,959.57 is: 5,934.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,659.33 : 11,479.77 = 3,959.57 : x
  2. Step 2: Convert to fraction form
    7,659.33/11,479.77 = 3,959.57/x
  3. Step 3: Cross multiply
    7,659.33x = 11,479.77 × 3,959.57
  4. Step 4: Simplify right side
    7,659.33x = 45,454,895.50
  5. Step 5: Solve for x
    x = 45,454,895.50/7,659.33
  6. Step 6: Final answer
    x = 5,934.58

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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.