Home / 2,308.70-3,185.99-1,260.75

Finding the Fourth Proportional to 2,308.70, 3,185.99 and 1,260.75

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Solution

The fourth proportional to 2,308.70, 3,185.99 and 1,260.75 is: 1,739.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,308.70 : 3,185.99 = 1,260.75 : x
  2. Step 2: Convert to fraction form
    2,308.70/3,185.99 = 1,260.75/x
  3. Step 3: Cross multiply
    2,308.70x = 3,185.99 × 1,260.75
  4. Step 4: Simplify right side
    2,308.70x = 4,016,740.04
  5. Step 5: Solve for x
    x = 4,016,740.04/2,308.70
  6. Step 6: Final answer
    x = 1,739.83

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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.