Home / 3,904.32-5,387.04-2,854.56

Finding the Fourth Proportional to 3,904.32, 5,387.04 and 2,854.56

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Solution

The fourth proportional to 3,904.32, 5,387.04 and 2,854.56 is: 3,938.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.32 : 5,387.04 = 2,854.56 : x
  2. Step 2: Convert to fraction form
    3,904.32/5,387.04 = 2,854.56/x
  3. Step 3: Cross multiply
    3,904.32x = 5,387.04 × 2,854.56
  4. Step 4: Simplify right side
    3,904.32x = 15,377,628.90
  5. Step 5: Solve for x
    x = 15,377,628.90/3,904.32
  6. Step 6: Final answer
    x = 3,938.62

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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.