Home / 2,609.11-3,916.23-1,913.80

Finding the Fourth Proportional to 2,609.11, 3,916.23 and 1,913.80

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Solution

The fourth proportional to 2,609.11, 3,916.23 and 1,913.80 is: 2,872.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.11 : 3,916.23 = 1,913.80 : x
  2. Step 2: Convert to fraction form
    2,609.11/3,916.23 = 1,913.80/x
  3. Step 3: Cross multiply
    2,609.11x = 3,916.23 × 1,913.80
  4. Step 4: Simplify right side
    2,609.11x = 7,494,885.87
  5. Step 5: Solve for x
    x = 7,494,885.87/2,609.11
  6. Step 6: Final answer
    x = 2,872.58

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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.