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Finding the Fourth Proportional to 3,388.43, 4,674.65 and 1,971.88

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Solution

The fourth proportional to 3,388.43, 4,674.65 and 1,971.88 is: 2,720.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388.43 : 4,674.65 = 1,971.88 : x
  2. Step 2: Convert to fraction form
    3,388.43/4,674.65 = 1,971.88/x
  3. Step 3: Cross multiply
    3,388.43x = 4,674.65 × 1,971.88
  4. Step 4: Simplify right side
    3,388.43x = 9,217,827.30
  5. Step 5: Solve for x
    x = 9,217,827.30/3,388.43
  6. Step 6: Final answer
    x = 2,720.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.