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Finding the Fourth Proportional to 7,216.80, 10,812.44 and 5,015.22

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Solution

The fourth proportional to 7,216.80, 10,812.44 and 5,015.22 is: 7,513.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216.80 : 10,812.44 = 5,015.22 : x
  2. Step 2: Convert to fraction form
    7,216.80/10,812.44 = 5,015.22/x
  3. Step 3: Cross multiply
    7,216.80x = 10,812.44 × 5,015.22
  4. Step 4: Simplify right side
    7,216.80x = 54,226,777.87
  5. Step 5: Solve for x
    x = 54,226,777.87/7,216.80
  6. Step 6: Final answer
    x = 7,513.96

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1.5x scale

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.