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Finding the Fourth Proportional to 8,372, 11,553.36 and 5,224.16

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Solution

The fourth proportional to 8,372, 11,553.36 and 5,224.16 is: 7,209.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,372 : 11,553.36 = 5,224.16 : x
  2. Step 2: Convert to fraction form
    8,372/11,553.36 = 5,224.16/x
  3. Step 3: Cross multiply
    8,372x = 11,553.36 × 5,224.16
  4. Step 4: Simplify right side
    8,372x = 60,356,601.18
  5. Step 5: Solve for x
    x = 60,356,601.18/8,372
  6. Step 6: Final answer
    x = 7,209.34

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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.