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Finding the Fourth Proportional to 2,867.01, 4,299.60 and 918.75

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Solution

The fourth proportional to 2,867.01, 4,299.60 and 918.75 is: 1,377.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.01 : 4,299.60 = 918.75 : x
  2. Step 2: Convert to fraction form
    2,867.01/4,299.60 = 918.75/x
  3. Step 3: Cross multiply
    2,867.01x = 4,299.60 × 918.75
  4. Step 4: Simplify right side
    2,867.01x = 3,950,257.50
  5. Step 5: Solve for x
    x = 3,950,257.50/2,867.01
  6. Step 6: Final answer
    x = 1,377.83

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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.