Home / 8,118.57-12,178.33-2,275.64

Finding the Fourth Proportional to 8,118.57, 12,178.33 and 2,275.64

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Solution

The fourth proportional to 8,118.57, 12,178.33 and 2,275.64 is: 3,413.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.57 : 12,178.33 = 2,275.64 : x
  2. Step 2: Convert to fraction form
    8,118.57/12,178.33 = 2,275.64/x
  3. Step 3: Cross multiply
    8,118.57x = 12,178.33 × 2,275.64
  4. Step 4: Simplify right side
    8,118.57x = 27,713,428.30
  5. Step 5: Solve for x
    x = 27,713,428.30/8,118.57
  6. Step 6: Final answer
    x = 3,413.58

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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.