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Finding the Fourth Proportional to 3,988.84, 5,505.22 and 3,043.02

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Solution

The fourth proportional to 3,988.84, 5,505.22 and 3,043.02 is: 4,199.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.84 : 5,505.22 = 3,043.02 : x
  2. Step 2: Convert to fraction form
    3,988.84/5,505.22 = 3,043.02/x
  3. Step 3: Cross multiply
    3,988.84x = 5,505.22 × 3,043.02
  4. Step 4: Simplify right side
    3,988.84x = 16,752,494.56
  5. Step 5: Solve for x
    x = 16,752,494.56/3,988.84
  6. Step 6: Final answer
    x = 4,199.84

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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.