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Finding the Fourth Proportional to 7,803.95, 11,704.78 and 2,872.45

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Solution

The fourth proportional to 7,803.95, 11,704.78 and 2,872.45 is: 4,308.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,803.95 : 11,704.78 = 2,872.45 : x
  2. Step 2: Convert to fraction form
    7,803.95/11,704.78 = 2,872.45/x
  3. Step 3: Cross multiply
    7,803.95x = 11,704.78 × 2,872.45
  4. Step 4: Simplify right side
    7,803.95x = 33,621,358.87
  5. Step 5: Solve for x
    x = 33,621,358.87/7,803.95
  6. Step 6: Final answer
    x = 4,308.25

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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.