Home / 3,020.78-4,168.61-1,694.45

Finding the Fourth Proportional to 3,020.78, 4,168.61 and 1,694.45

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Solution

The fourth proportional to 3,020.78, 4,168.61 and 1,694.45 is: 2,338.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,020.78 : 4,168.61 = 1,694.45 : x
  2. Step 2: Convert to fraction form
    3,020.78/4,168.61 = 1,694.45/x
  3. Step 3: Cross multiply
    3,020.78x = 4,168.61 × 1,694.45
  4. Step 4: Simplify right side
    3,020.78x = 7,063,471.90
  5. Step 5: Solve for x
    x = 7,063,471.90/3,020.78
  6. Step 6: Final answer
    x = 2,338.30

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Half scale
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Double scale
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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.