Home / 2,310.70-3,191.01-1,977.18

Finding the Fourth Proportional to 2,310.70, 3,191.01 and 1,977.18

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Solution

The fourth proportional to 2,310.70, 3,191.01 and 1,977.18 is: 2,730.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.70 : 3,191.01 = 1,977.18 : x
  2. Step 2: Convert to fraction form
    2,310.70/3,191.01 = 1,977.18/x
  3. Step 3: Cross multiply
    2,310.70x = 3,191.01 × 1,977.18
  4. Step 4: Simplify right side
    2,310.70x = 6,309,201.15
  5. Step 5: Solve for x
    x = 6,309,201.15/2,310.70
  6. Step 6: Final answer
    x = 2,730.43

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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.