Home / 8,188.12-12,285.87-3,509.36

Finding the Fourth Proportional to 8,188.12, 12,285.87 and 3,509.36

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Solution

The fourth proportional to 8,188.12, 12,285.87 and 3,509.36 is: 5,265.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,188.12 : 12,285.87 = 3,509.36 : x
  2. Step 2: Convert to fraction form
    8,188.12/12,285.87 = 3,509.36/x
  3. Step 3: Cross multiply
    8,188.12x = 12,285.87 × 3,509.36
  4. Step 4: Simplify right side
    8,188.12x = 43,115,540.74
  5. Step 5: Solve for x
    x = 43,115,540.74/8,188.12
  6. Step 6: Final answer
    x = 5,265.62

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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.