Home / 3,621.76-5,431.62-1,400.08

Finding the Fourth Proportional to 3,621.76, 5,431.62 and 1,400.08

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Solution

The fourth proportional to 3,621.76, 5,431.62 and 1,400.08 is: 2,099.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.76 : 5,431.62 = 1,400.08 : x
  2. Step 2: Convert to fraction form
    3,621.76/5,431.62 = 1,400.08/x
  3. Step 3: Cross multiply
    3,621.76x = 5,431.62 × 1,400.08
  4. Step 4: Simplify right side
    3,621.76x = 7,604,702.53
  5. Step 5: Solve for x
    x = 7,604,702.53/3,621.76
  6. Step 6: Final answer
    x = 2,099.73

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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.