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Finding the Fourth Proportional to 3,916.51, 5,874.97 and 994.84

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Solution

The fourth proportional to 3,916.51, 5,874.97 and 994.84 is: 1,492.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.51 : 5,874.97 = 994.84 : x
  2. Step 2: Convert to fraction form
    3,916.51/5,874.97 = 994.84/x
  3. Step 3: Cross multiply
    3,916.51x = 5,874.97 × 994.84
  4. Step 4: Simplify right side
    3,916.51x = 5,844,655.15
  5. Step 5: Solve for x
    x = 5,844,655.15/3,916.51
  6. Step 6: Final answer
    x = 1,492.31

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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.