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Finding the Fourth Proportional to 7,299.80, 10,956.90 and 3,606.20

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Solution

The fourth proportional to 7,299.80, 10,956.90 and 3,606.20 is: 5,412.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,299.80 : 10,956.90 = 3,606.20 : x
  2. Step 2: Convert to fraction form
    7,299.80/10,956.90 = 3,606.20/x
  3. Step 3: Cross multiply
    7,299.80x = 10,956.90 × 3,606.20
  4. Step 4: Simplify right side
    7,299.80x = 39,512,772.78
  5. Step 5: Solve for x
    x = 39,512,772.78/7,299.80
  6. Step 6: Final answer
    x = 5,412.86

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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.