Home / 7,148.82-10,727.10-2,989.20

Finding the Fourth Proportional to 7,148.82, 10,727.10 and 2,989.20

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Solution

The fourth proportional to 7,148.82, 10,727.10 and 2,989.20 is: 4,485.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,148.82 : 10,727.10 = 2,989.20 : x
  2. Step 2: Convert to fraction form
    7,148.82/10,727.10 = 2,989.20/x
  3. Step 3: Cross multiply
    7,148.82x = 10,727.10 × 2,989.20
  4. Step 4: Simplify right side
    7,148.82x = 32,065,447.32
  5. Step 5: Solve for x
    x = 32,065,447.32/7,148.82
  6. Step 6: Final answer
    x = 4,485.42

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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.