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Finding the Fourth Proportional to 2,902.15, 4,005 and 1,575.87

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Solution

The fourth proportional to 2,902.15, 4,005 and 1,575.87 is: 2,174.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,902.15 : 4,005 = 1,575.87 : x
  2. Step 2: Convert to fraction form
    2,902.15/4,005 = 1,575.87/x
  3. Step 3: Cross multiply
    2,902.15x = 4,005 × 1,575.87
  4. Step 4: Simplify right side
    2,902.15x = 6,311,374.37
  5. Step 5: Solve for x
    x = 6,311,374.37/2,902.15
  6. Step 6: Final answer
    x = 2,174.73

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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.