Home / 7,021.21-10,532.96-2,639.02

Finding the Fourth Proportional to 7,021.21, 10,532.96 and 2,639.02

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Solution

The fourth proportional to 7,021.21, 10,532.96 and 2,639.02 is: 3,958.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.21 : 10,532.96 = 2,639.02 : x
  2. Step 2: Convert to fraction form
    7,021.21/10,532.96 = 2,639.02/x
  3. Step 3: Cross multiply
    7,021.21x = 10,532.96 × 2,639.02
  4. Step 4: Simplify right side
    7,021.21x = 27,796,678.90
  5. Step 5: Solve for x
    x = 27,796,678.90/7,021.21
  6. Step 6: Final answer
    x = 3,958.96

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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.