Home / 6,286.20-9,419.46-4,090.20

Finding the Fourth Proportional to 6,286.20, 9,419.46 and 4,090.20

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Solution

The fourth proportional to 6,286.20, 9,419.46 and 4,090.20 is: 6,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,286.20 : 9,419.46 = 4,090.20 : x
  2. Step 2: Convert to fraction form
    6,286.20/9,419.46 = 4,090.20/x
  3. Step 3: Cross multiply
    6,286.20x = 9,419.46 × 4,090.20
  4. Step 4: Simplify right side
    6,286.20x = 38,527,475.29
  5. Step 5: Solve for x
    x = 38,527,475.29/6,286.20
  6. Step 6: Final answer
    x = 6,128.90

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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.