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Finding the Fourth Proportional to 6,912.99, 10,373.79 and 2,808.99

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Solution

The fourth proportional to 6,912.99, 10,373.79 and 2,808.99 is: 4,215.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.99 : 10,373.79 = 2,808.99 : x
  2. Step 2: Convert to fraction form
    6,912.99/10,373.79 = 2,808.99/x
  3. Step 3: Cross multiply
    6,912.99x = 10,373.79 × 2,808.99
  4. Step 4: Simplify right side
    6,912.99x = 29,139,872.37
  5. Step 5: Solve for x
    x = 29,139,872.37/6,912.99
  6. Step 6: Final answer
    x = 4,215.23

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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.