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Finding the Fourth Proportional to 7,709.44, 10,660.90 and 7,361.34

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Solution

The fourth proportional to 7,709.44, 10,660.90 and 7,361.34 is: 10,179.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,709.44 : 10,660.90 = 7,361.34 : x
  2. Step 2: Convert to fraction form
    7,709.44/10,660.90 = 7,361.34/x
  3. Step 3: Cross multiply
    7,709.44x = 10,660.90 × 7,361.34
  4. Step 4: Simplify right side
    7,709.44x = 78,478,509.61
  5. Step 5: Solve for x
    x = 78,478,509.61/7,709.44
  6. Step 6: Final answer
    x = 10,179.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.