Home / 8,118.69-12,178.08-2,275.35

Finding the Fourth Proportional to 8,118.69, 12,178.08 and 2,275.35

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Solution

The fourth proportional to 8,118.69, 12,178.08 and 2,275.35 is: 3,413.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.69 : 12,178.08 = 2,275.35 : x
  2. Step 2: Convert to fraction form
    8,118.69/12,178.08 = 2,275.35/x
  3. Step 3: Cross multiply
    8,118.69x = 12,178.08 × 2,275.35
  4. Step 4: Simplify right side
    8,118.69x = 27,709,394.33
  5. Step 5: Solve for x
    x = 27,709,394.33/8,118.69
  6. Step 6: Final answer
    x = 3,413.04

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1.5x scale

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.