Home / 3,511.38-4,845.70-1,939.47

Finding the Fourth Proportional to 3,511.38, 4,845.70 and 1,939.47

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Solution

The fourth proportional to 3,511.38, 4,845.70 and 1,939.47 is: 2,676.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.38 : 4,845.70 = 1,939.47 : x
  2. Step 2: Convert to fraction form
    3,511.38/4,845.70 = 1,939.47/x
  3. Step 3: Cross multiply
    3,511.38x = 4,845.70 × 1,939.47
  4. Step 4: Simplify right side
    3,511.38x = 9,398,089.78
  5. Step 5: Solve for x
    x = 9,398,089.78/3,511.38
  6. Step 6: Final answer
    x = 2,676.47

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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.