Home / 5,269-7,896.64-2,145.36

Finding the Fourth Proportional to 5,269, 7,896.64 and 2,145.36

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Solution

The fourth proportional to 5,269, 7,896.64 and 2,145.36 is: 3,215.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,269 : 7,896.64 = 2,145.36 : x
  2. Step 2: Convert to fraction form
    5,269/7,896.64 = 2,145.36/x
  3. Step 3: Cross multiply
    5,269x = 7,896.64 × 2,145.36
  4. Step 4: Simplify right side
    5,269x = 16,941,135.59
  5. Step 5: Solve for x
    x = 16,941,135.59/5,269
  6. Step 6: Final answer
    x = 3,215.25

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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.