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Finding the Fourth Proportional to 6,951.21, 10,427.84 and 2,020.21

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Solution

The fourth proportional to 6,951.21, 10,427.84 and 2,020.21 is: 3,030.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,951.21 : 10,427.84 = 2,020.21 : x
  2. Step 2: Convert to fraction form
    6,951.21/10,427.84 = 2,020.21/x
  3. Step 3: Cross multiply
    6,951.21x = 10,427.84 × 2,020.21
  4. Step 4: Simplify right side
    6,951.21x = 21,066,426.65
  5. Step 5: Solve for x
    x = 21,066,426.65/6,951.21
  6. Step 6: Final answer
    x = 3,030.61

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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.