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Finding the Fourth Proportional to 7,872.68, 11,803.74 and 2,936.36

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Solution

The fourth proportional to 7,872.68, 11,803.74 and 2,936.36 is: 4,402.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,872.68 : 11,803.74 = 2,936.36 : x
  2. Step 2: Convert to fraction form
    7,872.68/11,803.74 = 2,936.36/x
  3. Step 3: Cross multiply
    7,872.68x = 11,803.74 × 2,936.36
  4. Step 4: Simplify right side
    7,872.68x = 34,660,029.99
  5. Step 5: Solve for x
    x = 34,660,029.99/7,872.68
  6. Step 6: Final answer
    x = 4,402.57

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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.