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Finding the Fourth Proportional to 2,906, 4,359.72 and 854

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Solution

The fourth proportional to 2,906, 4,359.72 and 854 is: 1,281.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,906 : 4,359.72 = 854 : x
  2. Step 2: Convert to fraction form
    2,906/4,359.72 = 854/x
  3. Step 3: Cross multiply
    2,906x = 4,359.72 × 854
  4. Step 4: Simplify right side
    2,906x = 3,723,200.88
  5. Step 5: Solve for x
    x = 3,723,200.88/2,906
  6. Step 6: Final answer
    x = 1,281.21

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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.