Home / 5,625-8,438.79-1,927.21

Finding the Fourth Proportional to 5,625, 8,438.79 and 1,927.21

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Solution

The fourth proportional to 5,625, 8,438.79 and 1,927.21 is: 2,891.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,625 : 8,438.79 = 1,927.21 : x
  2. Step 2: Convert to fraction form
    5,625/8,438.79 = 1,927.21/x
  3. Step 3: Cross multiply
    5,625x = 8,438.79 × 1,927.21
  4. Step 4: Simplify right side
    5,625x = 16,263,320.48
  5. Step 5: Solve for x
    x = 16,263,320.48/5,625
  6. Step 6: Final answer
    x = 2,891.26

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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.