Home / 5,149.05-7,106.07-2,880.57

Finding the Fourth Proportional to 5,149.05, 7,106.07 and 2,880.57

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Solution

The fourth proportional to 5,149.05, 7,106.07 and 2,880.57 is: 3,975.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.05 : 7,106.07 = 2,880.57 : x
  2. Step 2: Convert to fraction form
    5,149.05/7,106.07 = 2,880.57/x
  3. Step 3: Cross multiply
    5,149.05x = 7,106.07 × 2,880.57
  4. Step 4: Simplify right side
    5,149.05x = 20,469,532.06
  5. Step 5: Solve for x
    x = 20,469,532.06/5,149.05
  6. Step 6: Final answer
    x = 3,975.40

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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.