Home / 3,097.09-4,273.94-1,680.78

Finding the Fourth Proportional to 3,097.09, 4,273.94 and 1,680.78

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Solution

The fourth proportional to 3,097.09, 4,273.94 and 1,680.78 is: 2,319.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,097.09 : 4,273.94 = 1,680.78 : x
  2. Step 2: Convert to fraction form
    3,097.09/4,273.94 = 1,680.78/x
  3. Step 3: Cross multiply
    3,097.09x = 4,273.94 × 1,680.78
  4. Step 4: Simplify right side
    3,097.09x = 7,183,532.31
  5. Step 5: Solve for x
    x = 7,183,532.31/3,097.09
  6. Step 6: Final answer
    x = 2,319.45

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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.