Home / 6,485.13-9,721.44-2,099.61

Finding the Fourth Proportional to 6,485.13, 9,721.44 and 2,099.61

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Solution

The fourth proportional to 6,485.13, 9,721.44 and 2,099.61 is: 3,147.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.13 : 9,721.44 = 2,099.61 : x
  2. Step 2: Convert to fraction form
    6,485.13/9,721.44 = 2,099.61/x
  3. Step 3: Cross multiply
    6,485.13x = 9,721.44 × 2,099.61
  4. Step 4: Simplify right side
    6,485.13x = 20,411,232.64
  5. Step 5: Solve for x
    x = 20,411,232.64/6,485.13
  6. Step 6: Final answer
    x = 3,147.39

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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.