Home / 8,736.60-13,099.86-2,891.64

Finding the Fourth Proportional to 8,736.60, 13,099.86 and 2,891.64

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Solution

The fourth proportional to 8,736.60, 13,099.86 and 2,891.64 is: 4,335.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,736.60 : 13,099.86 = 2,891.64 : x
  2. Step 2: Convert to fraction form
    8,736.60/13,099.86 = 2,891.64/x
  3. Step 3: Cross multiply
    8,736.60x = 13,099.86 × 2,891.64
  4. Step 4: Simplify right side
    8,736.60x = 37,880,079.17
  5. Step 5: Solve for x
    x = 37,880,079.17/8,736.60
  6. Step 6: Final answer
    x = 4,335.79

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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.