Home / 3,170.10-4,755.15-1,320.60

Finding the Fourth Proportional to 3,170.10, 4,755.15 and 1,320.60

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Solution

The fourth proportional to 3,170.10, 4,755.15 and 1,320.60 is: 1,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,170.10 : 4,755.15 = 1,320.60 : x
  2. Step 2: Convert to fraction form
    3,170.10/4,755.15 = 1,320.60/x
  3. Step 3: Cross multiply
    3,170.10x = 4,755.15 × 1,320.60
  4. Step 4: Simplify right side
    3,170.10x = 6,279,651.09
  5. Step 5: Solve for x
    x = 6,279,651.09/3,170.10
  6. Step 6: Final answer
    x = 1,980.90

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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.