Home / 8,188.86-12,285.68-2,642.09

Finding the Fourth Proportional to 8,188.86, 12,285.68 and 2,642.09

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Solution

The fourth proportional to 8,188.86, 12,285.68 and 2,642.09 is: 3,963.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,188.86 : 12,285.68 = 2,642.09 : x
  2. Step 2: Convert to fraction form
    8,188.86/12,285.68 = 2,642.09/x
  3. Step 3: Cross multiply
    8,188.86x = 12,285.68 × 2,642.09
  4. Step 4: Simplify right side
    8,188.86x = 32,459,872.27
  5. Step 5: Solve for x
    x = 32,459,872.27/8,188.86
  6. Step 6: Final answer
    x = 3,963.91

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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.