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Finding the Fourth Proportional to 5,266.64, 7,899.96 and 2,668.88

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Solution

The fourth proportional to 5,266.64, 7,899.96 and 2,668.88 is: 4,003.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,266.64 : 7,899.96 = 2,668.88 : x
  2. Step 2: Convert to fraction form
    5,266.64/7,899.96 = 2,668.88/x
  3. Step 3: Cross multiply
    5,266.64x = 7,899.96 × 2,668.88
  4. Step 4: Simplify right side
    5,266.64x = 21,084,045.24
  5. Step 5: Solve for x
    x = 21,084,045.24/5,266.64
  6. Step 6: Final answer
    x = 4,003.32

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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.