Home / 8,286.80-12,430.68-3,356.32

Finding the Fourth Proportional to 8,286.80, 12,430.68 and 3,356.32

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Solution

The fourth proportional to 8,286.80, 12,430.68 and 3,356.32 is: 5,034.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286.80 : 12,430.68 = 3,356.32 : x
  2. Step 2: Convert to fraction form
    8,286.80/12,430.68 = 3,356.32/x
  3. Step 3: Cross multiply
    8,286.80x = 12,430.68 × 3,356.32
  4. Step 4: Simplify right side
    8,286.80x = 41,721,339.90
  5. Step 5: Solve for x
    x = 41,721,339.90/8,286.80
  6. Step 6: Final answer
    x = 5,034.67

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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.