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Finding the Fourth Proportional to 3,916.09, 5,874.11 and 994.39

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Solution

The fourth proportional to 3,916.09, 5,874.11 and 994.39 is: 1,491.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.09 : 5,874.11 = 994.39 : x
  2. Step 2: Convert to fraction form
    3,916.09/5,874.11 = 994.39/x
  3. Step 3: Cross multiply
    3,916.09x = 5,874.11 × 994.39
  4. Step 4: Simplify right side
    3,916.09x = 5,841,156.24
  5. Step 5: Solve for x
    x = 5,841,156.24/3,916.09
  6. Step 6: Final answer
    x = 1,491.58

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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.