Home / 2,308.64-3,185.90-1,260.70

Finding the Fourth Proportional to 2,308.64, 3,185.90 and 1,260.70

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Solution

The fourth proportional to 2,308.64, 3,185.90 and 1,260.70 is: 1,739.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,308.64 : 3,185.90 = 1,260.70 : x
  2. Step 2: Convert to fraction form
    2,308.64/3,185.90 = 1,260.70/x
  3. Step 3: Cross multiply
    2,308.64x = 3,185.90 × 1,260.70
  4. Step 4: Simplify right side
    2,308.64x = 4,016,464.13
  5. Step 5: Solve for x
    x = 4,016,464.13/2,308.64
  6. Step 6: Final answer
    x = 1,739.75

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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.