Home / 8,005.38-12,007.98-3,619.80

Finding the Fourth Proportional to 8,005.38, 12,007.98 and 3,619.80

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Solution

The fourth proportional to 8,005.38, 12,007.98 and 3,619.80 is: 5,429.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,005.38 : 12,007.98 = 3,619.80 : x
  2. Step 2: Convert to fraction form
    8,005.38/12,007.98 = 3,619.80/x
  3. Step 3: Cross multiply
    8,005.38x = 12,007.98 × 3,619.80
  4. Step 4: Simplify right side
    8,005.38x = 43,466,486.00
  5. Step 5: Solve for x
    x = 43,466,486.00/8,005.38
  6. Step 6: Final answer
    x = 5,429.66

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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.