Home / 3,904.09-5,387.49-2,135.65

Finding the Fourth Proportional to 3,904.09, 5,387.49 and 2,135.65

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Solution

The fourth proportional to 3,904.09, 5,387.49 and 2,135.65 is: 2,947.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.09 : 5,387.49 = 2,135.65 : x
  2. Step 2: Convert to fraction form
    3,904.09/5,387.49 = 2,135.65/x
  3. Step 3: Cross multiply
    3,904.09x = 5,387.49 × 2,135.65
  4. Step 4: Simplify right side
    3,904.09x = 11,505,793.02
  5. Step 5: Solve for x
    x = 11,505,793.02/3,904.09
  6. Step 6: Final answer
    x = 2,947.11

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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.