Home / 3,318.21-4,972.62-2,621.82

Finding the Fourth Proportional to 3,318.21, 4,972.62 and 2,621.82

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Solution

The fourth proportional to 3,318.21, 4,972.62 and 2,621.82 is: 3,929.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.21 : 4,972.62 = 2,621.82 : x
  2. Step 2: Convert to fraction form
    3,318.21/4,972.62 = 2,621.82/x
  3. Step 3: Cross multiply
    3,318.21x = 4,972.62 × 2,621.82
  4. Step 4: Simplify right side
    3,318.21x = 13,037,314.57
  5. Step 5: Solve for x
    x = 13,037,314.57/3,318.21
  6. Step 6: Final answer
    x = 3,929.02

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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.