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Finding the Fourth Proportional to 2,160.69, 3,241.03 and 621.69

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Solution

The fourth proportional to 2,160.69, 3,241.03 and 621.69 is: 932.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.69 : 3,241.03 = 621.69 : x
  2. Step 2: Convert to fraction form
    2,160.69/3,241.03 = 621.69/x
  3. Step 3: Cross multiply
    2,160.69x = 3,241.03 × 621.69
  4. Step 4: Simplify right side
    2,160.69x = 2,014,915.94
  5. Step 5: Solve for x
    x = 2,014,915.94/2,160.69
  6. Step 6: Final answer
    x = 932.53

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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.