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Finding the Fourth Proportional to 2,817.88, 3,888.68 and 1,575.88

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Solution

The fourth proportional to 2,817.88, 3,888.68 and 1,575.88 is: 2,174.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.88 : 3,888.68 = 1,575.88 : x
  2. Step 2: Convert to fraction form
    2,817.88/3,888.68 = 1,575.88/x
  3. Step 3: Cross multiply
    2,817.88x = 3,888.68 × 1,575.88
  4. Step 4: Simplify right side
    2,817.88x = 6,128,093.04
  5. Step 5: Solve for x
    x = 6,128,093.04/2,817.88
  6. Step 6: Final answer
    x = 2,174.72

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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.