Home / 7,128.08-10,695-3,228.56

Finding the Fourth Proportional to 7,128.08, 10,695 and 3,228.56

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Solution

The fourth proportional to 7,128.08, 10,695 and 3,228.56 is: 4,844.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.08 : 10,695 = 3,228.56 : x
  2. Step 2: Convert to fraction form
    7,128.08/10,695 = 3,228.56/x
  3. Step 3: Cross multiply
    7,128.08x = 10,695 × 3,228.56
  4. Step 4: Simplify right side
    7,128.08x = 34,529,449.20
  5. Step 5: Solve for x
    x = 34,529,449.20/7,128.08
  6. Step 6: Final answer
    x = 4,844.14

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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.