Home / 4,160.31-6,239.39-1,238.78

Finding the Fourth Proportional to 4,160.31, 6,239.39 and 1,238.78

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Solution

The fourth proportional to 4,160.31, 6,239.39 and 1,238.78 is: 1,857.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,160.31 : 6,239.39 = 1,238.78 : x
  2. Step 2: Convert to fraction form
    4,160.31/6,239.39 = 1,238.78/x
  3. Step 3: Cross multiply
    4,160.31x = 6,239.39 × 1,238.78
  4. Step 4: Simplify right side
    4,160.31x = 7,729,194.15
  5. Step 5: Solve for x
    x = 7,729,194.15/4,160.31
  6. Step 6: Final answer
    x = 1,857.84

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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.