Home / 3,989.37-5,984.36-1,216.28

Finding the Fourth Proportional to 3,989.37, 5,984.36 and 1,216.28

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Solution

The fourth proportional to 3,989.37, 5,984.36 and 1,216.28 is: 1,824.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.37 : 5,984.36 = 1,216.28 : x
  2. Step 2: Convert to fraction form
    3,989.37/5,984.36 = 1,216.28/x
  3. Step 3: Cross multiply
    3,989.37x = 5,984.36 × 1,216.28
  4. Step 4: Simplify right side
    3,989.37x = 7,278,621.38
  5. Step 5: Solve for x
    x = 7,278,621.38/3,989.37
  6. Step 6: Final answer
    x = 1,824.50

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Similar ratio
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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.