Home / 3,578.18-5,367.30-981.14

Finding the Fourth Proportional to 3,578.18, 5,367.30 and 981.14

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Solution

The fourth proportional to 3,578.18, 5,367.30 and 981.14 is: 1,471.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.18 : 5,367.30 = 981.14 : x
  2. Step 2: Convert to fraction form
    3,578.18/5,367.30 = 981.14/x
  3. Step 3: Cross multiply
    3,578.18x = 5,367.30 × 981.14
  4. Step 4: Simplify right side
    3,578.18x = 5,266,072.72
  5. Step 5: Solve for x
    x = 5,266,072.72/3,578.18
  6. Step 6: Final answer
    x = 1,471.72

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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.