Home / 2,253.96-3,379.32-1,278.72

Finding the Fourth Proportional to 2,253.96, 3,379.32 and 1,278.72

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Solution

The fourth proportional to 2,253.96, 3,379.32 and 1,278.72 is: 1,917.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,253.96 : 3,379.32 = 1,278.72 : x
  2. Step 2: Convert to fraction form
    2,253.96/3,379.32 = 1,278.72/x
  3. Step 3: Cross multiply
    2,253.96x = 3,379.32 × 1,278.72
  4. Step 4: Simplify right side
    2,253.96x = 4,321,204.07
  5. Step 5: Solve for x
    x = 4,321,204.07/2,253.96
  6. Step 6: Final answer
    x = 1,917.16

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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.