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Finding the Fourth Proportional to 6,918.70, 10,381.70 and 4,150.93

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Solution

The fourth proportional to 6,918.70, 10,381.70 and 4,150.93 is: 6,228.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918.70 : 10,381.70 = 4,150.93 : x
  2. Step 2: Convert to fraction form
    6,918.70/10,381.70 = 4,150.93/x
  3. Step 3: Cross multiply
    6,918.70x = 10,381.70 × 4,150.93
  4. Step 4: Simplify right side
    6,918.70x = 43,093,709.98
  5. Step 5: Solve for x
    x = 43,093,709.98/6,918.70
  6. Step 6: Final answer
    x = 6,228.58

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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.