Home / 5,221.35-7,812.81-3,142.62

Finding the Fourth Proportional to 5,221.35, 7,812.81 and 3,142.62

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Solution

The fourth proportional to 5,221.35, 7,812.81 and 3,142.62 is: 4,702.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.35 : 7,812.81 = 3,142.62 : x
  2. Step 2: Convert to fraction form
    5,221.35/7,812.81 = 3,142.62/x
  3. Step 3: Cross multiply
    5,221.35x = 7,812.81 × 3,142.62
  4. Step 4: Simplify right side
    5,221.35x = 24,552,692.96
  5. Step 5: Solve for x
    x = 24,552,692.96/5,221.35
  6. Step 6: Final answer
    x = 4,702.36

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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.