Home / 2,099.79-3,147.66-1,919.36

Finding the Fourth Proportional to 2,099.79, 3,147.66 and 1,919.36

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Solution

The fourth proportional to 2,099.79, 3,147.66 and 1,919.36 is: 2,877.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099.79 : 3,147.66 = 1,919.36 : x
  2. Step 2: Convert to fraction form
    2,099.79/3,147.66 = 1,919.36/x
  3. Step 3: Cross multiply
    2,099.79x = 3,147.66 × 1,919.36
  4. Step 4: Simplify right side
    2,099.79x = 6,041,500.57
  5. Step 5: Solve for x
    x = 6,041,500.57/2,099.79
  6. Step 6: Final answer
    x = 2,877.19

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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.