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Finding the Fourth Proportional to 8,108.99, 11,190.40 and 4,382.99

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Solution

The fourth proportional to 8,108.99, 11,190.40 and 4,382.99 is: 6,048.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.99 : 11,190.40 = 4,382.99 : x
  2. Step 2: Convert to fraction form
    8,108.99/11,190.40 = 4,382.99/x
  3. Step 3: Cross multiply
    8,108.99x = 11,190.40 × 4,382.99
  4. Step 4: Simplify right side
    8,108.99x = 49,047,411.30
  5. Step 5: Solve for x
    x = 49,047,411.30/8,108.99
  6. Step 6: Final answer
    x = 6,048.52

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.