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Finding the Fourth Proportional to 3,584.42, 5,376.02 and 986.75

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Solution

The fourth proportional to 3,584.42, 5,376.02 and 986.75 is: 1,479.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,584.42 : 5,376.02 = 986.75 : x
  2. Step 2: Convert to fraction form
    3,584.42/5,376.02 = 986.75/x
  3. Step 3: Cross multiply
    3,584.42x = 5,376.02 × 986.75
  4. Step 4: Simplify right side
    3,584.42x = 5,304,787.74
  5. Step 5: Solve for x
    x = 5,304,787.74/3,584.42
  6. Step 6: Final answer
    x = 1,479.96

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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.