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Finding the Fourth Proportional to 8,140.50, 11,234.50 and 4,997.30

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Solution

The fourth proportional to 8,140.50, 11,234.50 and 4,997.30 is: 6,896.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.50 : 11,234.50 = 4,997.30 : x
  2. Step 2: Convert to fraction form
    8,140.50/11,234.50 = 4,997.30/x
  3. Step 3: Cross multiply
    8,140.50x = 11,234.50 × 4,997.30
  4. Step 4: Simplify right side
    8,140.50x = 56,142,098.18
  5. Step 5: Solve for x
    x = 56,142,098.18/8,140.50
  6. Step 6: Final answer
    x = 6,896.64

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Double 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.