Home / 8,679.40-11,974.36-5,696.92

Finding the Fourth Proportional to 8,679.40, 11,974.36 and 5,696.92

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Solution

The fourth proportional to 8,679.40, 11,974.36 and 5,696.92 is: 7,859.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.40 : 11,974.36 = 5,696.92 : x
  2. Step 2: Convert to fraction form
    8,679.40/11,974.36 = 5,696.92/x
  3. Step 3: Cross multiply
    8,679.40x = 11,974.36 × 5,696.92
  4. Step 4: Simplify right side
    8,679.40x = 68,216,970.97
  5. Step 5: Solve for x
    x = 68,216,970.97/8,679.40
  6. Step 6: Final answer
    x = 7,859.64

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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.