Home / 5,214.72-7,820.16-2,136.96

Finding the Fourth Proportional to 5,214.72, 7,820.16 and 2,136.96

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Solution

The fourth proportional to 5,214.72, 7,820.16 and 2,136.96 is: 3,204.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,214.72 : 7,820.16 = 2,136.96 : x
  2. Step 2: Convert to fraction form
    5,214.72/7,820.16 = 2,136.96/x
  3. Step 3: Cross multiply
    5,214.72x = 7,820.16 × 2,136.96
  4. Step 4: Simplify right side
    5,214.72x = 16,711,369.11
  5. Step 5: Solve for x
    x = 16,711,369.11/5,214.72
  6. Step 6: Final answer
    x = 3,204.65

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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.