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Finding the Fourth Proportional to 3,787.58, 5,679.79 and 2,230.72

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Solution

The fourth proportional to 3,787.58, 5,679.79 and 2,230.72 is: 3,345.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.58 : 5,679.79 = 2,230.72 : x
  2. Step 2: Convert to fraction form
    3,787.58/5,679.79 = 2,230.72/x
  3. Step 3: Cross multiply
    3,787.58x = 5,679.79 × 2,230.72
  4. Step 4: Simplify right side
    3,787.58x = 12,670,001.37
  5. Step 5: Solve for x
    x = 12,670,001.37/3,787.58
  6. Step 6: Final answer
    x = 3,345.14

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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.