Home / 8,694.28-11,999.64-5,159.44

Finding the Fourth Proportional to 8,694.28, 11,999.64 and 5,159.44

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Solution

The fourth proportional to 8,694.28, 11,999.64 and 5,159.44 is: 7,120.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,694.28 : 11,999.64 = 5,159.44 : x
  2. Step 2: Convert to fraction form
    8,694.28/11,999.64 = 5,159.44/x
  3. Step 3: Cross multiply
    8,694.28x = 11,999.64 × 5,159.44
  4. Step 4: Simplify right side
    8,694.28x = 61,911,422.60
  5. Step 5: Solve for x
    x = 61,911,422.60/8,694.28
  6. Step 6: Final answer
    x = 7,120.94

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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.