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Finding the Fourth Proportional to 4,872.86, 6,724.55 and 2,885.09

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Solution

The fourth proportional to 4,872.86, 6,724.55 and 2,885.09 is: 3,981.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,872.86 : 6,724.55 = 2,885.09 : x
  2. Step 2: Convert to fraction form
    4,872.86/6,724.55 = 2,885.09/x
  3. Step 3: Cross multiply
    4,872.86x = 6,724.55 × 2,885.09
  4. Step 4: Simplify right side
    4,872.86x = 19,400,905.55
  5. Step 5: Solve for x
    x = 19,400,905.55/4,872.86
  6. Step 6: Final answer
    x = 3,981.42

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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.