Home / 3,171.78-4,757.67-1,720.13

Finding the Fourth Proportional to 3,171.78, 4,757.67 and 1,720.13

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Solution

The fourth proportional to 3,171.78, 4,757.67 and 1,720.13 is: 2,580.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.78 : 4,757.67 = 1,720.13 : x
  2. Step 2: Convert to fraction form
    3,171.78/4,757.67 = 1,720.13/x
  3. Step 3: Cross multiply
    3,171.78x = 4,757.67 × 1,720.13
  4. Step 4: Simplify right side
    3,171.78x = 8,183,787.11
  5. Step 5: Solve for x
    x = 8,183,787.11/3,171.78
  6. Step 6: Final answer
    x = 2,580.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.