Home / 3,161.25-4,369.68-2,880.54

Finding the Fourth Proportional to 3,161.25, 4,369.68 and 2,880.54

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Solution

The fourth proportional to 3,161.25, 4,369.68 and 2,880.54 is: 3,981.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.25 : 4,369.68 = 2,880.54 : x
  2. Step 2: Convert to fraction form
    3,161.25/4,369.68 = 2,880.54/x
  3. Step 3: Cross multiply
    3,161.25x = 4,369.68 × 2,880.54
  4. Step 4: Simplify right side
    3,161.25x = 12,587,038.03
  5. Step 5: Solve for x
    x = 12,587,038.03/3,161.25
  6. Step 6: Final answer
    x = 3,981.66

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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.