Home / 3,972.36-5,955.84-2,020.80

Finding the Fourth Proportional to 3,972.36, 5,955.84 and 2,020.80

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Solution

The fourth proportional to 3,972.36, 5,955.84 and 2,020.80 is: 3,029.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.36 : 5,955.84 = 2,020.80 : x
  2. Step 2: Convert to fraction form
    3,972.36/5,955.84 = 2,020.80/x
  3. Step 3: Cross multiply
    3,972.36x = 5,955.84 × 2,020.80
  4. Step 4: Simplify right side
    3,972.36x = 12,035,561.47
  5. Step 5: Solve for x
    x = 12,035,561.47/3,972.36
  6. Step 6: Final answer
    x = 3,029.83

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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.