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Finding the Fourth Proportional to 5,787.83, 8,679.80 and 1,891.32

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Solution

The fourth proportional to 5,787.83, 8,679.80 and 1,891.32 is: 2,836.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.83 : 8,679.80 = 1,891.32 : x
  2. Step 2: Convert to fraction form
    5,787.83/8,679.80 = 1,891.32/x
  3. Step 3: Cross multiply
    5,787.83x = 8,679.80 × 1,891.32
  4. Step 4: Simplify right side
    5,787.83x = 16,416,269.88
  5. Step 5: Solve for x
    x = 16,416,269.88/5,787.83
  6. Step 6: Final answer
    x = 2,836.35

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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.