Home / 7,839.50-11,759.27-1,916.38

Finding the Fourth Proportional to 7,839.50, 11,759.27 and 1,916.38

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Solution

The fourth proportional to 7,839.50, 11,759.27 and 1,916.38 is: 2,874.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,839.50 : 11,759.27 = 1,916.38 : x
  2. Step 2: Convert to fraction form
    7,839.50/11,759.27 = 1,916.38/x
  3. Step 3: Cross multiply
    7,839.50x = 11,759.27 × 1,916.38
  4. Step 4: Simplify right side
    7,839.50x = 22,535,190.86
  5. Step 5: Solve for x
    x = 22,535,190.86/7,839.50
  6. Step 6: Final answer
    x = 2,874.57

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1.5x scale

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.