Home / 8,286.28-12,430.26-3,090.96

Finding the Fourth Proportional to 8,286.28, 12,430.26 and 3,090.96

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Solution

The fourth proportional to 8,286.28, 12,430.26 and 3,090.96 is: 4,636.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286.28 : 12,430.26 = 3,090.96 : x
  2. Step 2: Convert to fraction form
    8,286.28/12,430.26 = 3,090.96/x
  3. Step 3: Cross multiply
    8,286.28x = 12,430.26 × 3,090.96
  4. Step 4: Simplify right side
    8,286.28x = 38,421,436.45
  5. Step 5: Solve for x
    x = 38,421,436.45/8,286.28
  6. Step 6: Final answer
    x = 4,636.75

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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.