Home / 5,631.90-8,449.56-3,991.62

Finding the Fourth Proportional to 5,631.90, 8,449.56 and 3,991.62

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Solution

The fourth proportional to 5,631.90, 8,449.56 and 3,991.62 is: 5,988.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.90 : 8,449.56 = 3,991.62 : x
  2. Step 2: Convert to fraction form
    5,631.90/8,449.56 = 3,991.62/x
  3. Step 3: Cross multiply
    5,631.90x = 8,449.56 × 3,991.62
  4. Step 4: Simplify right side
    5,631.90x = 33,727,432.69
  5. Step 5: Solve for x
    x = 33,727,432.69/5,631.90
  6. Step 6: Final answer
    x = 5,988.64

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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.