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Finding the Fourth Proportional to 7,919.84, 11,874.72 and 3,757.28

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Solution

The fourth proportional to 7,919.84, 11,874.72 and 3,757.28 is: 5,633.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,919.84 : 11,874.72 = 3,757.28 : x
  2. Step 2: Convert to fraction form
    7,919.84/11,874.72 = 3,757.28/x
  3. Step 3: Cross multiply
    7,919.84x = 11,874.72 × 3,757.28
  4. Step 4: Simplify right side
    7,919.84x = 44,616,647.96
  5. Step 5: Solve for x
    x = 44,616,647.96/7,919.84
  6. Step 6: Final answer
    x = 5,633.53

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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.