Home / 2,239.88-3,091.01-1,245.12

Finding the Fourth Proportional to 2,239.88, 3,091.01 and 1,245.12

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Solution

The fourth proportional to 2,239.88, 3,091.01 and 1,245.12 is: 1,718.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,239.88 : 3,091.01 = 1,245.12 : x
  2. Step 2: Convert to fraction form
    2,239.88/3,091.01 = 1,245.12/x
  3. Step 3: Cross multiply
    2,239.88x = 3,091.01 × 1,245.12
  4. Step 4: Simplify right side
    2,239.88x = 3,848,672.15
  5. Step 5: Solve for x
    x = 3,848,672.15/2,239.88
  6. Step 6: Final answer
    x = 1,718.25

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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.