Home / 3,155.94-4,355.40-2,091.84

Finding the Fourth Proportional to 3,155.94, 4,355.40 and 2,091.84

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Solution

The fourth proportional to 3,155.94, 4,355.40 and 2,091.84 is: 2,886.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.94 : 4,355.40 = 2,091.84 : x
  2. Step 2: Convert to fraction form
    3,155.94/4,355.40 = 2,091.84/x
  3. Step 3: Cross multiply
    3,155.94x = 4,355.40 × 2,091.84
  4. Step 4: Simplify right side
    3,155.94x = 9,110,799.94
  5. Step 5: Solve for x
    x = 9,110,799.94/3,155.94
  6. Step 6: Final answer
    x = 2,886.87

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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.