Home / 3,318.72-4,980.34-2,149.26

Finding the Fourth Proportional to 3,318.72, 4,980.34 and 2,149.26

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Solution

The fourth proportional to 3,318.72, 4,980.34 and 2,149.26 is: 3,225.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.72 : 4,980.34 = 2,149.26 : x
  2. Step 2: Convert to fraction form
    3,318.72/4,980.34 = 2,149.26/x
  3. Step 3: Cross multiply
    3,318.72x = 4,980.34 × 2,149.26
  4. Step 4: Simplify right side
    3,318.72x = 10,704,045.55
  5. Step 5: Solve for x
    x = 10,704,045.55/3,318.72
  6. Step 6: Final answer
    x = 3,225.35

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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.