Home / 3,239.64-4,472.16-2,120.62

Finding the Fourth Proportional to 3,239.64, 4,472.16 and 2,120.62

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Solution

The fourth proportional to 3,239.64, 4,472.16 and 2,120.62 is: 2,927.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.64 : 4,472.16 = 2,120.62 : x
  2. Step 2: Convert to fraction form
    3,239.64/4,472.16 = 2,120.62/x
  3. Step 3: Cross multiply
    3,239.64x = 4,472.16 × 2,120.62
  4. Step 4: Simplify right side
    3,239.64x = 9,483,751.94
  5. Step 5: Solve for x
    x = 9,483,751.94/3,239.64
  6. Step 6: Final answer
    x = 2,927.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.