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Finding the Fourth Proportional to 3,419.60, 4,715.80 and 2,481.60

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Solution

The fourth proportional to 3,419.60, 4,715.80 and 2,481.60 is: 3,422.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.60 : 4,715.80 = 2,481.60 : x
  2. Step 2: Convert to fraction form
    3,419.60/4,715.80 = 2,481.60/x
  3. Step 3: Cross multiply
    3,419.60x = 4,715.80 × 2,481.60
  4. Step 4: Simplify right side
    3,419.60x = 11,702,729.28
  5. Step 5: Solve for x
    x = 11,702,729.28/3,419.60
  6. Step 6: Final answer
    x = 3,422.25

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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.