Home / 5,180.74-7,149.35-2,942.71

Finding the Fourth Proportional to 5,180.74, 7,149.35 and 2,942.71

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Solution

The fourth proportional to 5,180.74, 7,149.35 and 2,942.71 is: 4,060.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.74 : 7,149.35 = 2,942.71 : x
  2. Step 2: Convert to fraction form
    5,180.74/7,149.35 = 2,942.71/x
  3. Step 3: Cross multiply
    5,180.74x = 7,149.35 × 2,942.71
  4. Step 4: Simplify right side
    5,180.74x = 21,038,453.22
  5. Step 5: Solve for x
    x = 21,038,453.22/5,180.74
  6. Step 6: Final answer
    x = 4,060.90

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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.