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Finding the Fourth Proportional to 3,325.28, 4,986.38 and 984.44

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Solution

The fourth proportional to 3,325.28, 4,986.38 and 984.44 is: 1,476.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,325.28 : 4,986.38 = 984.44 : x
  2. Step 2: Convert to fraction form
    3,325.28/4,986.38 = 984.44/x
  3. Step 3: Cross multiply
    3,325.28x = 4,986.38 × 984.44
  4. Step 4: Simplify right side
    3,325.28x = 4,908,787.01
  5. Step 5: Solve for x
    x = 4,908,787.01/3,325.28
  6. Step 6: Final answer
    x = 1,476.20

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1.5x scale

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.