Home / 8,736.68-13,100.76-2,891.32

Finding the Fourth Proportional to 8,736.68, 13,100.76 and 2,891.32

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Solution

The fourth proportional to 8,736.68, 13,100.76 and 2,891.32 is: 4,335.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,736.68 : 13,100.76 = 2,891.32 : x
  2. Step 2: Convert to fraction form
    8,736.68/13,100.76 = 2,891.32/x
  3. Step 3: Cross multiply
    8,736.68x = 13,100.76 × 2,891.32
  4. Step 4: Simplify right side
    8,736.68x = 37,878,489.40
  5. Step 5: Solve for x
    x = 37,878,489.40/8,736.68
  6. Step 6: Final answer
    x = 4,335.57

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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.