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Finding the Fourth Proportional to 6,912.64, 10,367.46 and 1,980.96

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Solution

The fourth proportional to 6,912.64, 10,367.46 and 1,980.96 is: 2,971.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.64 : 10,367.46 = 1,980.96 : x
  2. Step 2: Convert to fraction form
    6,912.64/10,367.46 = 1,980.96/x
  3. Step 3: Cross multiply
    6,912.64x = 10,367.46 × 1,980.96
  4. Step 4: Simplify right side
    6,912.64x = 20,537,523.56
  5. Step 5: Solve for x
    x = 20,537,523.56/6,912.64
  6. Step 6: Final answer
    x = 2,971.01

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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.