Home / 3,511.91-4,845.78-2,019.89

Finding the Fourth Proportional to 3,511.91, 4,845.78 and 2,019.89

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Solution

The fourth proportional to 3,511.91, 4,845.78 and 2,019.89 is: 2,787.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.91 : 4,845.78 = 2,019.89 : x
  2. Step 2: Convert to fraction form
    3,511.91/4,845.78 = 2,019.89/x
  3. Step 3: Cross multiply
    3,511.91x = 4,845.78 × 2,019.89
  4. Step 4: Simplify right side
    3,511.91x = 9,787,918.34
  5. Step 5: Solve for x
    x = 9,787,918.34/3,511.91
  6. Step 6: Final answer
    x = 2,787.07

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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.