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Finding the Fourth Proportional to 5,266.66, 7,899.97 and 2,145.98

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Solution

The fourth proportional to 5,266.66, 7,899.97 and 2,145.98 is: 3,218.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,266.66 : 7,899.97 = 2,145.98 : x
  2. Step 2: Convert to fraction form
    5,266.66/7,899.97 = 2,145.98/x
  3. Step 3: Cross multiply
    5,266.66x = 7,899.97 × 2,145.98
  4. Step 4: Simplify right side
    5,266.66x = 16,953,192.01
  5. Step 5: Solve for x
    x = 16,953,192.01/5,266.66
  6. Step 6: Final answer
    x = 3,218.97

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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.