Home / 5,211.20-7,817.20-1,513.48

Finding the Fourth Proportional to 5,211.20, 7,817.20 and 1,513.48

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Solution

The fourth proportional to 5,211.20, 7,817.20 and 1,513.48 is: 2,270.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.20 : 7,817.20 = 1,513.48 : x
  2. Step 2: Convert to fraction form
    5,211.20/7,817.20 = 1,513.48/x
  3. Step 3: Cross multiply
    5,211.20x = 7,817.20 × 1,513.48
  4. Step 4: Simplify right side
    5,211.20x = 11,831,175.86
  5. Step 5: Solve for x
    x = 11,831,175.86/5,211.20
  6. Step 6: Final answer
    x = 2,270.34

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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.