Home / 5,487.21-8,231.09-1,591.92

Finding the Fourth Proportional to 5,487.21, 8,231.09 and 1,591.92

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Solution

The fourth proportional to 5,487.21, 8,231.09 and 1,591.92 is: 2,387.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.21 : 8,231.09 = 1,591.92 : x
  2. Step 2: Convert to fraction form
    5,487.21/8,231.09 = 1,591.92/x
  3. Step 3: Cross multiply
    5,487.21x = 8,231.09 × 1,591.92
  4. Step 4: Simplify right side
    5,487.21x = 13,103,228.83
  5. Step 5: Solve for x
    x = 13,103,228.83/5,487.21
  6. Step 6: Final answer
    x = 2,387.96

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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.