Home / 8,428.98-12,643.37-2,188.44

Finding the Fourth Proportional to 8,428.98, 12,643.37 and 2,188.44

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Solution

The fourth proportional to 8,428.98, 12,643.37 and 2,188.44 is: 3,282.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.98 : 12,643.37 = 2,188.44 : x
  2. Step 2: Convert to fraction form
    8,428.98/12,643.37 = 2,188.44/x
  3. Step 3: Cross multiply
    8,428.98x = 12,643.37 × 2,188.44
  4. Step 4: Simplify right side
    8,428.98x = 27,669,256.64
  5. Step 5: Solve for x
    x = 27,669,256.64/8,428.98
  6. Step 6: Final answer
    x = 3,282.63

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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.