Home / 8,118.40-12,176.70-2,275.60

Finding the Fourth Proportional to 8,118.40, 12,176.70 and 2,275.60

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Solution

The fourth proportional to 8,118.40, 12,176.70 and 2,275.60 is: 3,413.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.40 : 12,176.70 = 2,275.60 : x
  2. Step 2: Convert to fraction form
    8,118.40/12,176.70 = 2,275.60/x
  3. Step 3: Cross multiply
    8,118.40x = 12,176.70 × 2,275.60
  4. Step 4: Simplify right side
    8,118.40x = 27,709,298.52
  5. Step 5: Solve for x
    x = 27,709,298.52/8,118.40
  6. Step 6: Final answer
    x = 3,413.15

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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.