Home / 8,688.94-13,033.22-2,115.16

Finding the Fourth Proportional to 8,688.94, 13,033.22 and 2,115.16

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Solution

The fourth proportional to 8,688.94, 13,033.22 and 2,115.16 is: 3,172.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.94 : 13,033.22 = 2,115.16 : x
  2. Step 2: Convert to fraction form
    8,688.94/13,033.22 = 2,115.16/x
  3. Step 3: Cross multiply
    8,688.94x = 13,033.22 × 2,115.16
  4. Step 4: Simplify right side
    8,688.94x = 27,567,269.87
  5. Step 5: Solve for x
    x = 27,567,269.87/8,688.94
  6. Step 6: Final answer
    x = 3,172.69

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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.