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Finding the Fourth Proportional to 7,021.21, 9,735.44 and 6,787.03

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Solution

The fourth proportional to 7,021.21, 9,735.44 and 6,787.03 is: 9,410.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.21 : 9,735.44 = 6,787.03 : x
  2. Step 2: Convert to fraction form
    7,021.21/9,735.44 = 6,787.03/x
  3. Step 3: Cross multiply
    7,021.21x = 9,735.44 × 6,787.03
  4. Step 4: Simplify right side
    7,021.21x = 66,074,640.73
  5. Step 5: Solve for x
    x = 66,074,640.73/7,021.21
  6. Step 6: Final answer
    x = 9,410.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.