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Finding the Fourth Proportional to 3,988.83, 5,983.24 and 1,908.34

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Solution

The fourth proportional to 3,988.83, 5,983.24 and 1,908.34 is: 2,862.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.83 : 5,983.24 = 1,908.34 : x
  2. Step 2: Convert to fraction form
    3,988.83/5,983.24 = 1,908.34/x
  3. Step 3: Cross multiply
    3,988.83x = 5,983.24 × 1,908.34
  4. Step 4: Simplify right side
    3,988.83x = 11,418,056.22
  5. Step 5: Solve for x
    x = 11,418,056.22/3,988.83
  6. Step 6: Final answer
    x = 2,862.51

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Similar ratio
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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.