Home / 8,519.95-12,781.77-3,586.75

Finding the Fourth Proportional to 8,519.95, 12,781.77 and 3,586.75

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Solution

The fourth proportional to 8,519.95, 12,781.77 and 3,586.75 is: 5,380.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,519.95 : 12,781.77 = 3,586.75 : x
  2. Step 2: Convert to fraction form
    8,519.95/12,781.77 = 3,586.75/x
  3. Step 3: Cross multiply
    8,519.95x = 12,781.77 × 3,586.75
  4. Step 4: Simplify right side
    8,519.95x = 45,844,968.14
  5. Step 5: Solve for x
    x = 45,844,968.14/8,519.95
  6. Step 6: Final answer
    x = 5,380.90

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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.