Home / 3,178.38-4,766.81-1,098.45

Finding the Fourth Proportional to 3,178.38, 4,766.81 and 1,098.45

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Solution

The fourth proportional to 3,178.38, 4,766.81 and 1,098.45 is: 1,647.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.38 : 4,766.81 = 1,098.45 : x
  2. Step 2: Convert to fraction form
    3,178.38/4,766.81 = 1,098.45/x
  3. Step 3: Cross multiply
    3,178.38x = 4,766.81 × 1,098.45
  4. Step 4: Simplify right side
    3,178.38x = 5,236,114.83
  5. Step 5: Solve for x
    x = 5,236,114.83/3,178.38
  6. Step 6: Final answer
    x = 1,647.42

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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.