Home / 5,311.20-7,967.10-1,613.55

Finding the Fourth Proportional to 5,311.20, 7,967.10 and 1,613.55

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Solution

The fourth proportional to 5,311.20, 7,967.10 and 1,613.55 is: 2,420.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.20 : 7,967.10 = 1,613.55 : x
  2. Step 2: Convert to fraction form
    5,311.20/7,967.10 = 1,613.55/x
  3. Step 3: Cross multiply
    5,311.20x = 7,967.10 × 1,613.55
  4. Step 4: Simplify right side
    5,311.20x = 12,855,314.21
  5. Step 5: Solve for x
    x = 12,855,314.21/5,311.20
  6. Step 6: Final answer
    x = 2,420.42

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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.