Home / 7,289.06-10,935.09-3,129.30

Finding the Fourth Proportional to 7,289.06, 10,935.09 and 3,129.30

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Solution

The fourth proportional to 7,289.06, 10,935.09 and 3,129.30 is: 4,694.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,289.06 : 10,935.09 = 3,129.30 : x
  2. Step 2: Convert to fraction form
    7,289.06/10,935.09 = 3,129.30/x
  3. Step 3: Cross multiply
    7,289.06x = 10,935.09 × 3,129.30
  4. Step 4: Simplify right side
    7,289.06x = 34,219,177.14
  5. Step 5: Solve for x
    x = 34,219,177.14/7,289.06
  6. Step 6: Final answer
    x = 4,694.60

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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.