Home / 3,990.28-5,981.74-2,525

Finding the Fourth Proportional to 3,990.28, 5,981.74 and 2,525

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Solution

The fourth proportional to 3,990.28, 5,981.74 and 2,525 is: 3,785.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.28 : 5,981.74 = 2,525 : x
  2. Step 2: Convert to fraction form
    3,990.28/5,981.74 = 2,525/x
  3. Step 3: Cross multiply
    3,990.28x = 5,981.74 × 2,525
  4. Step 4: Simplify right side
    3,990.28x = 15,103,893.50
  5. Step 5: Solve for x
    x = 15,103,893.50/3,990.28
  6. Step 6: Final answer
    x = 3,785.17

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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.