Home / 5,185.62-7,778.33-1,487.87

Finding the Fourth Proportional to 5,185.62, 7,778.33 and 1,487.87

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Solution

The fourth proportional to 5,185.62, 7,778.33 and 1,487.87 is: 2,231.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.62 : 7,778.33 = 1,487.87 : x
  2. Step 2: Convert to fraction form
    5,185.62/7,778.33 = 1,487.87/x
  3. Step 3: Cross multiply
    5,185.62x = 7,778.33 × 1,487.87
  4. Step 4: Simplify right side
    5,185.62x = 11,573,132.27
  5. Step 5: Solve for x
    x = 11,573,132.27/5,185.62
  6. Step 6: Final answer
    x = 2,231.77

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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.