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Finding the Fourth Proportional to 7,892.95, 11,843.58 and 3,216.42

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Solution

The fourth proportional to 7,892.95, 11,843.58 and 3,216.42 is: 4,826.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892.95 : 11,843.58 = 3,216.42 : x
  2. Step 2: Convert to fraction form
    7,892.95/11,843.58 = 3,216.42/x
  3. Step 3: Cross multiply
    7,892.95x = 11,843.58 × 3,216.42
  4. Step 4: Simplify right side
    7,892.95x = 38,093,927.58
  5. Step 5: Solve for x
    x = 38,093,927.58/7,892.95
  6. Step 6: Final answer
    x = 4,826.32

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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.