Home / 2,178.23-3,267.47-717.39

Finding the Fourth Proportional to 2,178.23, 3,267.47 and 717.39

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Solution

The fourth proportional to 2,178.23, 3,267.47 and 717.39 is: 1,076.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.23 : 3,267.47 = 717.39 : x
  2. Step 2: Convert to fraction form
    2,178.23/3,267.47 = 717.39/x
  3. Step 3: Cross multiply
    2,178.23x = 3,267.47 × 717.39
  4. Step 4: Simplify right side
    2,178.23x = 2,344,052.10
  5. Step 5: Solve for x
    x = 2,344,052.10/2,178.23
  6. Step 6: Final answer
    x = 1,076.13

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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.