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Finding the Fourth Proportional to 7,011.56, 10,509.27 and 2,847

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Solution

The fourth proportional to 7,011.56, 10,509.27 and 2,847 is: 4,267.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,011.56 : 10,509.27 = 2,847 : x
  2. Step 2: Convert to fraction form
    7,011.56/10,509.27 = 2,847/x
  3. Step 3: Cross multiply
    7,011.56x = 10,509.27 × 2,847
  4. Step 4: Simplify right side
    7,011.56x = 29,919,897.03
  5. Step 5: Solve for x
    x = 29,919,897.03/7,011.56
  6. Step 6: Final answer
    x = 4,267.22

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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.