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Finding the Fourth Proportional to 5,787.05, 8,680.37 and 1,891.49

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Solution

The fourth proportional to 5,787.05, 8,680.37 and 1,891.49 is: 2,837.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.05 : 8,680.37 = 1,891.49 : x
  2. Step 2: Convert to fraction form
    5,787.05/8,680.37 = 1,891.49/x
  3. Step 3: Cross multiply
    5,787.05x = 8,680.37 × 1,891.49
  4. Step 4: Simplify right side
    5,787.05x = 16,418,780.19
  5. Step 5: Solve for x
    x = 16,418,780.19/5,787.05
  6. Step 6: Final answer
    x = 2,837.16

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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.