Home / 3,212.18-4,822.21-2,117.46

Finding the Fourth Proportional to 3,212.18, 4,822.21 and 2,117.46

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Solution

The fourth proportional to 3,212.18, 4,822.21 and 2,117.46 is: 3,178.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.18 : 4,822.21 = 2,117.46 : x
  2. Step 2: Convert to fraction form
    3,212.18/4,822.21 = 2,117.46/x
  3. Step 3: Cross multiply
    3,212.18x = 4,822.21 × 2,117.46
  4. Step 4: Simplify right side
    3,212.18x = 10,210,836.79
  5. Step 5: Solve for x
    x = 10,210,836.79/3,212.18
  6. Step 6: Final answer
    x = 3,178.79

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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.