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Finding the Fourth Proportional to 8,636.36, 11,918.18 and 5,099.81

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Solution

The fourth proportional to 8,636.36, 11,918.18 and 5,099.81 is: 7,037.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.36 : 11,918.18 = 5,099.81 : x
  2. Step 2: Convert to fraction form
    8,636.36/11,918.18 = 5,099.81/x
  3. Step 3: Cross multiply
    8,636.36x = 11,918.18 × 5,099.81
  4. Step 4: Simplify right side
    8,636.36x = 60,780,406.70
  5. Step 5: Solve for x
    x = 60,780,406.70/8,636.36
  6. Step 6: Final answer
    x = 7,037.74

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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.