Home / 8,518.76-12,777.62-3,180.92

Finding the Fourth Proportional to 8,518.76, 12,777.62 and 3,180.92

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Solution

The fourth proportional to 8,518.76, 12,777.62 and 3,180.92 is: 4,771.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.76 : 12,777.62 = 3,180.92 : x
  2. Step 2: Convert to fraction form
    8,518.76/12,777.62 = 3,180.92/x
  3. Step 3: Cross multiply
    8,518.76x = 12,777.62 × 3,180.92
  4. Step 4: Simplify right side
    8,518.76x = 40,644,507.22
  5. Step 5: Solve for x
    x = 40,644,507.22/8,518.76
  6. Step 6: Final answer
    x = 4,771.18

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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.