Home / 3,431.88-5,144.72-1,239.06

Finding the Fourth Proportional to 3,431.88, 5,144.72 and 1,239.06

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Solution

The fourth proportional to 3,431.88, 5,144.72 and 1,239.06 is: 1,857.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.88 : 5,144.72 = 1,239.06 : x
  2. Step 2: Convert to fraction form
    3,431.88/5,144.72 = 1,239.06/x
  3. Step 3: Cross multiply
    3,431.88x = 5,144.72 × 1,239.06
  4. Step 4: Simplify right side
    3,431.88x = 6,374,616.76
  5. Step 5: Solve for x
    x = 6,374,616.76/3,431.88
  6. Step 6: Final answer
    x = 1,857.47

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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.