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Finding the Fourth Proportional to 5,787.24, 8,681.90 and 1,890.60

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Solution

The fourth proportional to 5,787.24, 8,681.90 and 1,890.60 is: 2,836.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,787.24 : 8,681.90 = 1,890.60 : x
  2. Step 2: Convert to fraction form
    5,787.24/8,681.90 = 1,890.60/x
  3. Step 3: Cross multiply
    5,787.24x = 8,681.90 × 1,890.60
  4. Step 4: Simplify right side
    5,787.24x = 16,414,000.14
  5. Step 5: Solve for x
    x = 16,414,000.14/5,787.24
  6. Step 6: Final answer
    x = 2,836.24

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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.