Home / 3,387.79-4,673.39-2,391.49

Finding the Fourth Proportional to 3,387.79, 4,673.39 and 2,391.49

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Solution

The fourth proportional to 3,387.79, 4,673.39 and 2,391.49 is: 3,299.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.79 : 4,673.39 = 2,391.49 : x
  2. Step 2: Convert to fraction form
    3,387.79/4,673.39 = 2,391.49/x
  3. Step 3: Cross multiply
    3,387.79x = 4,673.39 × 2,391.49
  4. Step 4: Simplify right side
    3,387.79x = 11,176,371.43
  5. Step 5: Solve for x
    x = 11,176,371.43/3,387.79
  6. Step 6: Final answer
    x = 3,299.02

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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.