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Finding the Fourth Proportional to 2,961.60, 4,442.36 and 881.60

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Solution

The fourth proportional to 2,961.60, 4,442.36 and 881.60 is: 1,322.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.60 : 4,442.36 = 881.60 : x
  2. Step 2: Convert to fraction form
    2,961.60/4,442.36 = 881.60/x
  3. Step 3: Cross multiply
    2,961.60x = 4,442.36 × 881.60
  4. Step 4: Simplify right side
    2,961.60x = 3,916,357.96
  5. Step 5: Solve for x
    x = 3,916,357.96/2,961.60
  6. Step 6: Final answer
    x = 1,322.38

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1.5x scale

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.