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Finding the Fourth Proportional to 7,271.68, 10,906 and 2,076.16

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Solution

The fourth proportional to 7,271.68, 10,906 and 2,076.16 is: 3,113.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,271.68 : 10,906 = 2,076.16 : x
  2. Step 2: Convert to fraction form
    7,271.68/10,906 = 2,076.16/x
  3. Step 3: Cross multiply
    7,271.68x = 10,906 × 2,076.16
  4. Step 4: Simplify right side
    7,271.68x = 22,642,600.96
  5. Step 5: Solve for x
    x = 22,642,600.96/7,271.68
  6. Step 6: Final answer
    x = 3,113.81

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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.