Home / 3,904.23-5,387.88-2,135.86

Finding the Fourth Proportional to 3,904.23, 5,387.88 and 2,135.86

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Solution

The fourth proportional to 3,904.23, 5,387.88 and 2,135.86 is: 2,947.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.23 : 5,387.88 = 2,135.86 : x
  2. Step 2: Convert to fraction form
    3,904.23/5,387.88 = 2,135.86/x
  3. Step 3: Cross multiply
    3,904.23x = 5,387.88 × 2,135.86
  4. Step 4: Simplify right side
    3,904.23x = 11,507,757.38
  5. Step 5: Solve for x
    x = 11,507,757.38/3,904.23
  6. Step 6: Final answer
    x = 2,947.51

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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.