Home / 3,618.53-5,428.37-1,538.55

Finding the Fourth Proportional to 3,618.53, 5,428.37 and 1,538.55

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Solution

The fourth proportional to 3,618.53, 5,428.37 and 1,538.55 is: 2,308.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.53 : 5,428.37 = 1,538.55 : x
  2. Step 2: Convert to fraction form
    3,618.53/5,428.37 = 1,538.55/x
  3. Step 3: Cross multiply
    3,618.53x = 5,428.37 × 1,538.55
  4. Step 4: Simplify right side
    3,618.53x = 8,351,810.97
  5. Step 5: Solve for x
    x = 8,351,810.97/3,618.53
  6. Step 6: Final answer
    x = 2,308.07

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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.