Home / 2,268.45-3,130.70-1,273.68

Finding the Fourth Proportional to 2,268.45, 3,130.70 and 1,273.68

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Solution

The fourth proportional to 2,268.45, 3,130.70 and 1,273.68 is: 1,757.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,268.45 : 3,130.70 = 1,273.68 : x
  2. Step 2: Convert to fraction form
    2,268.45/3,130.70 = 1,273.68/x
  3. Step 3: Cross multiply
    2,268.45x = 3,130.70 × 1,273.68
  4. Step 4: Simplify right side
    2,268.45x = 3,987,503.61
  5. Step 5: Solve for x
    x = 3,987,503.61/2,268.45
  6. Step 6: Final answer
    x = 1,757.81

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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.