Home / 3,102.21-4,647.42-1,928.52

Finding the Fourth Proportional to 3,102.21, 4,647.42 and 1,928.52

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Solution

The fourth proportional to 3,102.21, 4,647.42 and 1,928.52 is: 2,889.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.21 : 4,647.42 = 1,928.52 : x
  2. Step 2: Convert to fraction form
    3,102.21/4,647.42 = 1,928.52/x
  3. Step 3: Cross multiply
    3,102.21x = 4,647.42 × 1,928.52
  4. Step 4: Simplify right side
    3,102.21x = 8,962,642.42
  5. Step 5: Solve for x
    x = 8,962,642.42/3,102.21
  6. Step 6: Final answer
    x = 2,889.12

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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.