Home / 5,221.15-7,830.18-1,522.21

Finding the Fourth Proportional to 5,221.15, 7,830.18 and 1,522.21

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Solution

The fourth proportional to 5,221.15, 7,830.18 and 1,522.21 is: 2,282.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.15 : 7,830.18 = 1,522.21 : x
  2. Step 2: Convert to fraction form
    5,221.15/7,830.18 = 1,522.21/x
  3. Step 3: Cross multiply
    5,221.15x = 7,830.18 × 1,522.21
  4. Step 4: Simplify right side
    5,221.15x = 11,919,170.69
  5. Step 5: Solve for x
    x = 11,919,170.69/5,221.15
  6. Step 6: Final answer
    x = 2,282.87

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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.