Home / 3,487.62-5,231.61-890.58

Finding the Fourth Proportional to 3,487.62, 5,231.61 and 890.58

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Solution

The fourth proportional to 3,487.62, 5,231.61 and 890.58 is: 1,335.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.62 : 5,231.61 = 890.58 : x
  2. Step 2: Convert to fraction form
    3,487.62/5,231.61 = 890.58/x
  3. Step 3: Cross multiply
    3,487.62x = 5,231.61 × 890.58
  4. Step 4: Simplify right side
    3,487.62x = 4,659,167.23
  5. Step 5: Solve for x
    x = 4,659,167.23/3,487.62
  6. Step 6: Final answer
    x = 1,335.92

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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.