Home / 3,618.80-5,424.54-1,426.68

Finding the Fourth Proportional to 3,618.80, 5,424.54 and 1,426.68

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Solution

The fourth proportional to 3,618.80, 5,424.54 and 1,426.68 is: 2,138.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.80 : 5,424.54 = 1,426.68 : x
  2. Step 2: Convert to fraction form
    3,618.80/5,424.54 = 1,426.68/x
  3. Step 3: Cross multiply
    3,618.80x = 5,424.54 × 1,426.68
  4. Step 4: Simplify right side
    3,618.80x = 7,739,082.73
  5. Step 5: Solve for x
    x = 7,739,082.73/3,618.80
  6. Step 6: Final answer
    x = 2,138.58

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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.