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Finding the Fourth Proportional to 5,008.67, 7,515.89 and 1,890.86

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Solution

The fourth proportional to 5,008.67, 7,515.89 and 1,890.86 is: 2,837.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,008.67 : 7,515.89 = 1,890.86 : x
  2. Step 2: Convert to fraction form
    5,008.67/7,515.89 = 1,890.86/x
  3. Step 3: Cross multiply
    5,008.67x = 7,515.89 × 1,890.86
  4. Step 4: Simplify right side
    5,008.67x = 14,211,448.73
  5. Step 5: Solve for x
    x = 14,211,448.73/5,008.67
  6. Step 6: Final answer
    x = 2,837.37

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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.