Home / 3,120.70-4,687.55-2,634.70

Finding the Fourth Proportional to 3,120.70, 4,687.55 and 2,634.70

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Solution

The fourth proportional to 3,120.70, 4,687.55 and 2,634.70 is: 3,957.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.70 : 4,687.55 = 2,634.70 : x
  2. Step 2: Convert to fraction form
    3,120.70/4,687.55 = 2,634.70/x
  3. Step 3: Cross multiply
    3,120.70x = 4,687.55 × 2,634.70
  4. Step 4: Simplify right side
    3,120.70x = 12,350,287.99
  5. Step 5: Solve for x
    x = 12,350,287.99/3,120.70
  6. Step 6: Final answer
    x = 3,957.54

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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.