Home / 3,578.42-4,938.27-2,161.91

Finding the Fourth Proportional to 3,578.42, 4,938.27 and 2,161.91

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Solution

The fourth proportional to 3,578.42, 4,938.27 and 2,161.91 is: 2,983.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.42 : 4,938.27 = 2,161.91 : x
  2. Step 2: Convert to fraction form
    3,578.42/4,938.27 = 2,161.91/x
  3. Step 3: Cross multiply
    3,578.42x = 4,938.27 × 2,161.91
  4. Step 4: Simplify right side
    3,578.42x = 10,676,106.87
  5. Step 5: Solve for x
    x = 10,676,106.87/3,578.42
  6. Step 6: Final answer
    x = 2,983.47

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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.