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Finding the Fourth Proportional to 2,160.88, 3,241.32 and 1,512.88

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Solution

The fourth proportional to 2,160.88, 3,241.32 and 1,512.88 is: 2,269.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.88 : 3,241.32 = 1,512.88 : x
  2. Step 2: Convert to fraction form
    2,160.88/3,241.32 = 1,512.88/x
  3. Step 3: Cross multiply
    2,160.88x = 3,241.32 × 1,512.88
  4. Step 4: Simplify right side
    2,160.88x = 4,903,728.20
  5. Step 5: Solve for x
    x = 4,903,728.20/2,160.88
  6. Step 6: Final answer
    x = 2,269.32

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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.