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Finding the Fourth Proportional to 5,755.65, 8,631.31 and 1,859.01

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Solution

The fourth proportional to 5,755.65, 8,631.31 and 1,859.01 is: 2,787.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,755.65 : 8,631.31 = 1,859.01 : x
  2. Step 2: Convert to fraction form
    5,755.65/8,631.31 = 1,859.01/x
  3. Step 3: Cross multiply
    5,755.65x = 8,631.31 × 1,859.01
  4. Step 4: Simplify right side
    5,755.65x = 16,045,682.31
  5. Step 5: Solve for x
    x = 16,045,682.31/5,755.65
  6. Step 6: Final answer
    x = 2,787.81

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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.