Home / 4,311.68-6,468.15-2,120.55

Finding the Fourth Proportional to 4,311.68, 6,468.15 and 2,120.55

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Solution

The fourth proportional to 4,311.68, 6,468.15 and 2,120.55 is: 3,181.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,311.68 : 6,468.15 = 2,120.55 : x
  2. Step 2: Convert to fraction form
    4,311.68/6,468.15 = 2,120.55/x
  3. Step 3: Cross multiply
    4,311.68x = 6,468.15 × 2,120.55
  4. Step 4: Simplify right side
    4,311.68x = 13,716,035.48
  5. Step 5: Solve for x
    x = 13,716,035.48/4,311.68
  6. Step 6: Final answer
    x = 3,181.14

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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.