Home / 3,578.90-4,939.92-2,162.37

Finding the Fourth Proportional to 3,578.90, 4,939.92 and 2,162.37

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Solution

The fourth proportional to 3,578.90, 4,939.92 and 2,162.37 is: 2,984.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.90 : 4,939.92 = 2,162.37 : x
  2. Step 2: Convert to fraction form
    3,578.90/4,939.92 = 2,162.37/x
  3. Step 3: Cross multiply
    3,578.90x = 4,939.92 × 2,162.37
  4. Step 4: Simplify right side
    3,578.90x = 10,681,934.81
  5. Step 5: Solve for x
    x = 10,681,934.81/3,578.90
  6. Step 6: Final answer
    x = 2,984.70

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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.