Home / 3,986.50-5,981.94-1,934.50

Finding the Fourth Proportional to 3,986.50, 5,981.94 and 1,934.50

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Solution

The fourth proportional to 3,986.50, 5,981.94 and 1,934.50 is: 2,902.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.50 : 5,981.94 = 1,934.50 : x
  2. Step 2: Convert to fraction form
    3,986.50/5,981.94 = 1,934.50/x
  3. Step 3: Cross multiply
    3,986.50x = 5,981.94 × 1,934.50
  4. Step 4: Simplify right side
    3,986.50x = 11,572,062.93
  5. Step 5: Solve for x
    x = 11,572,062.93/3,986.50
  6. Step 6: Final answer
    x = 2,902.81

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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.