Home / 2,172.10-3,255.04-1,676.78

Finding the Fourth Proportional to 2,172.10, 3,255.04 and 1,676.78

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Solution

The fourth proportional to 2,172.10, 3,255.04 and 1,676.78 is: 2,512.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.10 : 3,255.04 = 1,676.78 : x
  2. Step 2: Convert to fraction form
    2,172.10/3,255.04 = 1,676.78/x
  3. Step 3: Cross multiply
    2,172.10x = 3,255.04 × 1,676.78
  4. Step 4: Simplify right side
    2,172.10x = 5,457,985.97
  5. Step 5: Solve for x
    x = 5,457,985.97/2,172.10
  6. Step 6: Final answer
    x = 2,512.77

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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.