Home / 3,989.28-5,992.56-3,260.64

Finding the Fourth Proportional to 3,989.28, 5,992.56 and 3,260.64

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Solution

The fourth proportional to 3,989.28, 5,992.56 and 3,260.64 is: 4,898.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.28 : 5,992.56 = 3,260.64 : x
  2. Step 2: Convert to fraction form
    3,989.28/5,992.56 = 3,260.64/x
  3. Step 3: Cross multiply
    3,989.28x = 5,992.56 × 3,260.64
  4. Step 4: Simplify right side
    3,989.28x = 19,539,580.84
  5. Step 5: Solve for x
    x = 19,539,580.84/3,989.28
  6. Step 6: Final answer
    x = 4,898.02

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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.