Home / 3,578.70-4,939.83-2,163.18

Finding the Fourth Proportional to 3,578.70, 4,939.83 and 2,163.18

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Solution

The fourth proportional to 3,578.70, 4,939.83 and 2,163.18 is: 2,985.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.70 : 4,939.83 = 2,163.18 : x
  2. Step 2: Convert to fraction form
    3,578.70/4,939.83 = 2,163.18/x
  3. Step 3: Cross multiply
    3,578.70x = 4,939.83 × 2,163.18
  4. Step 4: Simplify right side
    3,578.70x = 10,685,741.46
  5. Step 5: Solve for x
    x = 10,685,741.46/3,578.70
  6. Step 6: Final answer
    x = 2,985.93

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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.