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Finding the Fourth Proportional to 5,553.60, 7,655.20 and 4,372.64

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Solution

The fourth proportional to 5,553.60, 7,655.20 and 4,372.64 is: 6,027.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,553.60 : 7,655.20 = 4,372.64 : x
  2. Step 2: Convert to fraction form
    5,553.60/7,655.20 = 4,372.64/x
  3. Step 3: Cross multiply
    5,553.60x = 7,655.20 × 4,372.64
  4. Step 4: Simplify right side
    5,553.60x = 33,473,433.73
  5. Step 5: Solve for x
    x = 33,473,433.73/5,553.60
  6. Step 6: Final answer
    x = 6,027.34

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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.