Home / 3,254.89-4,489.31-2,120.81

Finding the Fourth Proportional to 3,254.89, 4,489.31 and 2,120.81

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Solution

The fourth proportional to 3,254.89, 4,489.31 and 2,120.81 is: 2,925.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,254.89 : 4,489.31 = 2,120.81 : x
  2. Step 2: Convert to fraction form
    3,254.89/4,489.31 = 2,120.81/x
  3. Step 3: Cross multiply
    3,254.89x = 4,489.31 × 2,120.81
  4. Step 4: Simplify right side
    3,254.89x = 9,520,951.09
  5. Step 5: Solve for x
    x = 9,520,951.09/3,254.89
  6. Step 6: Final answer
    x = 2,925.13

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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.