Home / 6,445.12-9,660.96-3,665.80

Finding the Fourth Proportional to 6,445.12, 9,660.96 and 3,665.80

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Solution

The fourth proportional to 6,445.12, 9,660.96 and 3,665.80 is: 5,494.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,445.12 : 9,660.96 = 3,665.80 : x
  2. Step 2: Convert to fraction form
    6,445.12/9,660.96 = 3,665.80/x
  3. Step 3: Cross multiply
    6,445.12x = 9,660.96 × 3,665.80
  4. Step 4: Simplify right side
    6,445.12x = 35,415,147.17
  5. Step 5: Solve for x
    x = 35,415,147.17/6,445.12
  6. Step 6: Final answer
    x = 5,494.88

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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.