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Finding the Fourth Proportional to 10,662.20, 15,991.90 and 3,267.40

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Solution

The fourth proportional to 10,662.20, 15,991.90 and 3,267.40 is: 4,900.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,662.20 : 15,991.90 = 3,267.40 : x
  2. Step 2: Convert to fraction form
    10,662.20/15,991.90 = 3,267.40/x
  3. Step 3: Cross multiply
    10,662.20x = 15,991.90 × 3,267.40
  4. Step 4: Simplify right side
    10,662.20x = 52,251,934.06
  5. Step 5: Solve for x
    x = 52,251,934.06/10,662.20
  6. Step 6: Final answer
    x = 4,900.67

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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.