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Finding the Fourth Proportional to 3,988.97, 5,986.79 and 3,527.88

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Solution

The fourth proportional to 3,988.97, 5,986.79 and 3,527.88 is: 5,294.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.97 : 5,986.79 = 3,527.88 : x
  2. Step 2: Convert to fraction form
    3,988.97/5,986.79 = 3,527.88/x
  3. Step 3: Cross multiply
    3,988.97x = 5,986.79 × 3,527.88
  4. Step 4: Simplify right side
    3,988.97x = 21,120,676.71
  5. Step 5: Solve for x
    x = 21,120,676.71/3,988.97
  6. Step 6: Final answer
    x = 5,294.77

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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.