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Finding the Fourth Proportional to 5,215.86, 7,197.89 and 2,858.00

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Solution

The fourth proportional to 5,215.86, 7,197.89 and 2,858.00 is: 3,944.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.86 : 7,197.89 = 2,858.00 : x
  2. Step 2: Convert to fraction form
    5,215.86/7,197.89 = 2,858.00/x
  3. Step 3: Cross multiply
    5,215.86x = 7,197.89 × 2,858.00
  4. Step 4: Simplify right side
    5,215.86x = 20,571,519.34
  5. Step 5: Solve for x
    x = 20,571,519.34/5,215.86
  6. Step 6: Final answer
    x = 3,944.03

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.