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Finding the Fourth Proportional to 3,331.60, 4,986.60 and 2,597.20

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Solution

The fourth proportional to 3,331.60, 4,986.60 and 2,597.20 is: 3,887.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,331.60 : 4,986.60 = 2,597.20 : x
  2. Step 2: Convert to fraction form
    3,331.60/4,986.60 = 2,597.20/x
  3. Step 3: Cross multiply
    3,331.60x = 4,986.60 × 2,597.20
  4. Step 4: Simplify right side
    3,331.60x = 12,951,197.52
  5. Step 5: Solve for x
    x = 12,951,197.52/3,331.60
  6. Step 6: Final answer
    x = 3,887.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.