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Finding the Fourth Proportional to 3,431.84, 4,736.22 and 1,939.85

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Solution

The fourth proportional to 3,431.84, 4,736.22 and 1,939.85 is: 2,677.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.84 : 4,736.22 = 1,939.85 : x
  2. Step 2: Convert to fraction form
    3,431.84/4,736.22 = 1,939.85/x
  3. Step 3: Cross multiply
    3,431.84x = 4,736.22 × 1,939.85
  4. Step 4: Simplify right side
    3,431.84x = 9,187,569.07
  5. Step 5: Solve for x
    x = 9,187,569.07/3,431.84
  6. Step 6: Final answer
    x = 2,677.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.