Home / 8,118.56-12,178.25-2,275.76

Finding the Fourth Proportional to 8,118.56, 12,178.25 and 2,275.76

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Solution

The fourth proportional to 8,118.56, 12,178.25 and 2,275.76 is: 3,413.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.56 : 12,178.25 = 2,275.76 : x
  2. Step 2: Convert to fraction form
    8,118.56/12,178.25 = 2,275.76/x
  3. Step 3: Cross multiply
    8,118.56x = 12,178.25 × 2,275.76
  4. Step 4: Simplify right side
    8,118.56x = 27,714,762.84
  5. Step 5: Solve for x
    x = 27,714,762.84/8,118.56
  6. Step 6: Final answer
    x = 3,413.75

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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.