Home / 3,212.21-4,818.02-2,178.87

Finding the Fourth Proportional to 3,212.21, 4,818.02 and 2,178.87

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Solution

The fourth proportional to 3,212.21, 4,818.02 and 2,178.87 is: 3,268.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.21 : 4,818.02 = 2,178.87 : x
  2. Step 2: Convert to fraction form
    3,212.21/4,818.02 = 2,178.87/x
  3. Step 3: Cross multiply
    3,212.21x = 4,818.02 × 2,178.87
  4. Step 4: Simplify right side
    3,212.21x = 10,497,828.34
  5. Step 5: Solve for x
    x = 10,497,828.34/3,212.21
  6. Step 6: Final answer
    x = 3,268.11

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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.