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Finding the Fourth Proportional to 9,997.68, 13,797.08 and 5,521.84

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Solution

The fourth proportional to 9,997.68, 13,797.08 and 5,521.84 is: 7,620.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,997.68 : 13,797.08 = 5,521.84 : x
  2. Step 2: Convert to fraction form
    9,997.68/13,797.08 = 5,521.84/x
  3. Step 3: Cross multiply
    9,997.68x = 13,797.08 × 5,521.84
  4. Step 4: Simplify right side
    9,997.68x = 76,185,268.23
  5. Step 5: Solve for x
    x = 76,185,268.23/9,997.68
  6. Step 6: Final answer
    x = 7,620.29

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Half scale
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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.