Home / 3,958.80-5,938.14-1,185.45

Finding the Fourth Proportional to 3,958.80, 5,938.14 and 1,185.45

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Solution

The fourth proportional to 3,958.80, 5,938.14 and 1,185.45 is: 1,778.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,958.80 : 5,938.14 = 1,185.45 : x
  2. Step 2: Convert to fraction form
    3,958.80/5,938.14 = 1,185.45/x
  3. Step 3: Cross multiply
    3,958.80x = 5,938.14 × 1,185.45
  4. Step 4: Simplify right side
    3,958.80x = 7,039,368.06
  5. Step 5: Solve for x
    x = 7,039,368.06/3,958.80
  6. Step 6: Final answer
    x = 1,778.16

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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.