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Finding the Fourth Proportional to 11,765.60, 17,649.44 and 3,445.60

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Solution

The fourth proportional to 11,765.60, 17,649.44 and 3,445.60 is: 5,168.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,765.60 : 17,649.44 = 3,445.60 : x
  2. Step 2: Convert to fraction form
    11,765.60/17,649.44 = 3,445.60/x
  3. Step 3: Cross multiply
    11,765.60x = 17,649.44 × 3,445.60
  4. Step 4: Simplify right side
    11,765.60x = 60,812,910.46
  5. Step 5: Solve for x
    x = 60,812,910.46/11,765.60
  6. Step 6: Final answer
    x = 5,168.70

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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.