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Finding the Fourth Proportional to 7,845.30, 10,816.02 and 6,721.41

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Solution

The fourth proportional to 7,845.30, 10,816.02 and 6,721.41 is: 9,266.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,845.30 : 10,816.02 = 6,721.41 : x
  2. Step 2: Convert to fraction form
    7,845.30/10,816.02 = 6,721.41/x
  3. Step 3: Cross multiply
    7,845.30x = 10,816.02 × 6,721.41
  4. Step 4: Simplify right side
    7,845.30x = 72,698,904.99
  5. Step 5: Solve for x
    x = 72,698,904.99/7,845.30
  6. Step 6: Final answer
    x = 9,266.56

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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.