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Finding the Fourth Proportional to 3,330.76, 4,989.64 and 2,173

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Solution

The fourth proportional to 3,330.76, 4,989.64 and 2,173 is: 3,255.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,330.76 : 4,989.64 = 2,173 : x
  2. Step 2: Convert to fraction form
    3,330.76/4,989.64 = 2,173/x
  3. Step 3: Cross multiply
    3,330.76x = 4,989.64 × 2,173
  4. Step 4: Simplify right side
    3,330.76x = 10,842,487.72
  5. Step 5: Solve for x
    x = 10,842,487.72/3,330.76
  6. Step 6: Final answer
    x = 3,255.26

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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.