Home / 2,099.88-3,150.36-1,124.64

Finding the Fourth Proportional to 2,099.88, 3,150.36 and 1,124.64

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Solution

The fourth proportional to 2,099.88, 3,150.36 and 1,124.64 is: 1,687.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099.88 : 3,150.36 = 1,124.64 : x
  2. Step 2: Convert to fraction form
    2,099.88/3,150.36 = 1,124.64/x
  3. Step 3: Cross multiply
    2,099.88x = 3,150.36 × 1,124.64
  4. Step 4: Simplify right side
    2,099.88x = 3,543,020.87
  5. Step 5: Solve for x
    x = 3,543,020.87/2,099.88
  6. Step 6: Final answer
    x = 1,687.25

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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.