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Finding the Fourth Proportional to 12,572.39, 18,858.62 and 3,807.38

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Solution

The fourth proportional to 12,572.39, 18,858.62 and 3,807.38 is: 5,711.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.39 : 18,858.62 = 3,807.38 : x
  2. Step 2: Convert to fraction form
    12,572.39/18,858.62 = 3,807.38/x
  3. Step 3: Cross multiply
    12,572.39x = 18,858.62 × 3,807.38
  4. Step 4: Simplify right side
    12,572.39x = 71,801,989.28
  5. Step 5: Solve for x
    x = 71,801,989.28/12,572.39
  6. Step 6: Final answer
    x = 5,711.08

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.