Home / 3,984.20-5,975.91-1,210.90

Finding the Fourth Proportional to 3,984.20, 5,975.91 and 1,210.90

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Solution

The fourth proportional to 3,984.20, 5,975.91 and 1,210.90 is: 1,816.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.20 : 5,975.91 = 1,210.90 : x
  2. Step 2: Convert to fraction form
    3,984.20/5,975.91 = 1,210.90/x
  3. Step 3: Cross multiply
    3,984.20x = 5,975.91 × 1,210.90
  4. Step 4: Simplify right side
    3,984.20x = 7,236,229.42
  5. Step 5: Solve for x
    x = 7,236,229.42/3,984.20
  6. Step 6: Final answer
    x = 1,816.23

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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.