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Finding the Fourth Proportional to 8,388.48, 11,571.84 and 5,589.12

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Solution

The fourth proportional to 8,388.48, 11,571.84 and 5,589.12 is: 7,710.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,388.48 : 11,571.84 = 5,589.12 : x
  2. Step 2: Convert to fraction form
    8,388.48/11,571.84 = 5,589.12/x
  3. Step 3: Cross multiply
    8,388.48x = 11,571.84 × 5,589.12
  4. Step 4: Simplify right side
    8,388.48x = 64,676,402.38
  5. Step 5: Solve for x
    x = 64,676,402.38/8,388.48
  6. Step 6: Final answer
    x = 7,710.15

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Half scale
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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.