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Finding the Fourth Proportional to 7,216.81, 10,816.81 and 3,055.43

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Solution

The fourth proportional to 7,216.81, 10,816.81 and 3,055.43 is: 4,579.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216.81 : 10,816.81 = 3,055.43 : x
  2. Step 2: Convert to fraction form
    7,216.81/10,816.81 = 3,055.43/x
  3. Step 3: Cross multiply
    7,216.81x = 10,816.81 × 3,055.43
  4. Step 4: Simplify right side
    7,216.81x = 33,050,025.18
  5. Step 5: Solve for x
    x = 33,050,025.18/7,216.81
  6. Step 6: Final answer
    x = 4,579.59

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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.