Home / 6,660.40-9,189.84-3,865.36

Finding the Fourth Proportional to 6,660.40, 9,189.84 and 3,865.36

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Solution

The fourth proportional to 6,660.40, 9,189.84 and 3,865.36 is: 5,333.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,660.40 : 9,189.84 = 3,865.36 : x
  2. Step 2: Convert to fraction form
    6,660.40/9,189.84 = 3,865.36/x
  3. Step 3: Cross multiply
    6,660.40x = 9,189.84 × 3,865.36
  4. Step 4: Simplify right side
    6,660.40x = 35,522,039.94
  5. Step 5: Solve for x
    x = 35,522,039.94/6,660.40
  6. Step 6: Final answer
    x = 5,333.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.