Home / 2,268.86-3,131.08-1,274.21

Finding the Fourth Proportional to 2,268.86, 3,131.08 and 1,274.21

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Solution

The fourth proportional to 2,268.86, 3,131.08 and 1,274.21 is: 1,758.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,268.86 : 3,131.08 = 1,274.21 : x
  2. Step 2: Convert to fraction form
    2,268.86/3,131.08 = 1,274.21/x
  3. Step 3: Cross multiply
    2,268.86x = 3,131.08 × 1,274.21
  4. Step 4: Simplify right side
    2,268.86x = 3,989,653.45
  5. Step 5: Solve for x
    x = 3,989,653.45/2,268.86
  6. Step 6: Final answer
    x = 1,758.44

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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.