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Finding the Fourth Proportional to 7,476, 11,214 and 2,859

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Solution

The fourth proportional to 7,476, 11,214 and 2,859 is: 4,288.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,476 : 11,214 = 2,859 : x
  2. Step 2: Convert to fraction form
    7,476/11,214 = 2,859/x
  3. Step 3: Cross multiply
    7,476x = 11,214 × 2,859
  4. Step 4: Simplify right side
    7,476x = 32,060,826
  5. Step 5: Solve for x
    x = 32,060,826/7,476
  6. Step 6: Final answer
    x = 4,288.50

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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.