Home / 3,618.44-5,428.50-1,153.40

Finding the Fourth Proportional to 3,618.44, 5,428.50 and 1,153.40

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Solution

The fourth proportional to 3,618.44, 5,428.50 and 1,153.40 is: 1,730.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.44 : 5,428.50 = 1,153.40 : x
  2. Step 2: Convert to fraction form
    3,618.44/5,428.50 = 1,153.40/x
  3. Step 3: Cross multiply
    3,618.44x = 5,428.50 × 1,153.40
  4. Step 4: Simplify right side
    3,618.44x = 6,261,231.90
  5. Step 5: Solve for x
    x = 6,261,231.90/3,618.44
  6. Step 6: Final answer
    x = 1,730.37

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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.