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Finding the Fourth Proportional to 7,881.67, 10,876.57 and 4,345.21

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Solution

The fourth proportional to 7,881.67, 10,876.57 and 4,345.21 is: 5,996.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.67 : 10,876.57 = 4,345.21 : x
  2. Step 2: Convert to fraction form
    7,881.67/10,876.57 = 4,345.21/x
  3. Step 3: Cross multiply
    7,881.67x = 10,876.57 × 4,345.21
  4. Step 4: Simplify right side
    7,881.67x = 47,260,980.73
  5. Step 5: Solve for x
    x = 47,260,980.73/7,881.67
  6. Step 6: Final answer
    x = 5,996.32

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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.