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Finding the Fourth Proportional to 3,715.84, 5,571.79 and 1,249.86

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Solution

The fourth proportional to 3,715.84, 5,571.79 and 1,249.86 is: 1,874.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.84 : 5,571.79 = 1,249.86 : x
  2. Step 2: Convert to fraction form
    3,715.84/5,571.79 = 1,249.86/x
  3. Step 3: Cross multiply
    3,715.84x = 5,571.79 × 1,249.86
  4. Step 4: Simplify right side
    3,715.84x = 6,963,951.20
  5. Step 5: Solve for x
    x = 6,963,951.20/3,715.84
  6. Step 6: Final answer
    x = 1,874.13

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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.