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Finding the Fourth Proportional to 3,393.84, 4,683.32 and 1,977.56

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Solution

The fourth proportional to 3,393.84, 4,683.32 and 1,977.56 is: 2,728.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,393.84 : 4,683.32 = 1,977.56 : x
  2. Step 2: Convert to fraction form
    3,393.84/4,683.32 = 1,977.56/x
  3. Step 3: Cross multiply
    3,393.84x = 4,683.32 × 1,977.56
  4. Step 4: Simplify right side
    3,393.84x = 9,261,546.30
  5. Step 5: Solve for x
    x = 9,261,546.30/3,393.84
  6. Step 6: Final answer
    x = 2,728.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.