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Finding the Fourth Proportional to 5,518.53, 8,272.53 and 2,913.57

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Solution

The fourth proportional to 5,518.53, 8,272.53 and 2,913.57 is: 4,367.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.53 : 8,272.53 = 2,913.57 : x
  2. Step 2: Convert to fraction form
    5,518.53/8,272.53 = 2,913.57/x
  3. Step 3: Cross multiply
    5,518.53x = 8,272.53 × 2,913.57
  4. Step 4: Simplify right side
    5,518.53x = 24,102,595.23
  5. Step 5: Solve for x
    x = 24,102,595.23/5,518.53
  6. Step 6: Final answer
    x = 4,367.58

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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.