Home / 3,871.23-5,807.26-1,238.12

Finding the Fourth Proportional to 3,871.23, 5,807.26 and 1,238.12

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Solution

The fourth proportional to 3,871.23, 5,807.26 and 1,238.12 is: 1,857.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.23 : 5,807.26 = 1,238.12 : x
  2. Step 2: Convert to fraction form
    3,871.23/5,807.26 = 1,238.12/x
  3. Step 3: Cross multiply
    3,871.23x = 5,807.26 × 1,238.12
  4. Step 4: Simplify right side
    3,871.23x = 7,190,084.75
  5. Step 5: Solve for x
    x = 7,190,084.75/3,871.23
  6. Step 6: Final answer
    x = 1,857.31

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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.