Home / 3,618.20-5,428.14-1,153.02

Finding the Fourth Proportional to 3,618.20, 5,428.14 and 1,153.02

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Solution

The fourth proportional to 3,618.20, 5,428.14 and 1,153.02 is: 1,729.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.20 : 5,428.14 = 1,153.02 : x
  2. Step 2: Convert to fraction form
    3,618.20/5,428.14 = 1,153.02/x
  3. Step 3: Cross multiply
    3,618.20x = 5,428.14 × 1,153.02
  4. Step 4: Simplify right side
    3,618.20x = 6,258,753.98
  5. Step 5: Solve for x
    x = 6,258,753.98/3,618.20
  6. Step 6: Final answer
    x = 1,729.80

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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.