Home / 3,281.28-4,922.40-1,089.50

Finding the Fourth Proportional to 3,281.28, 4,922.40 and 1,089.50

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Solution

The fourth proportional to 3,281.28, 4,922.40 and 1,089.50 is: 1,634.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.28 : 4,922.40 = 1,089.50 : x
  2. Step 2: Convert to fraction form
    3,281.28/4,922.40 = 1,089.50/x
  3. Step 3: Cross multiply
    3,281.28x = 4,922.40 × 1,089.50
  4. Step 4: Simplify right side
    3,281.28x = 5,362,954.80
  5. Step 5: Solve for x
    x = 5,362,954.80/3,281.28
  6. Step 6: Final answer
    x = 1,634.41

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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.