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Finding the Fourth Proportional to 9,998.13, 13,800.10 and 5,749.66

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Solution

The fourth proportional to 9,998.13, 13,800.10 and 5,749.66 is: 7,936.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,998.13 : 13,800.10 = 5,749.66 : x
  2. Step 2: Convert to fraction form
    9,998.13/13,800.10 = 5,749.66/x
  3. Step 3: Cross multiply
    9,998.13x = 13,800.10 × 5,749.66
  4. Step 4: Simplify right side
    9,998.13x = 79,345,861.40
  5. Step 5: Solve for x
    x = 79,345,861.40/9,998.13
  6. Step 6: Final answer
    x = 7,936.07

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Double scale
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Similar ratio
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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.