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Finding the Fourth Proportional to 6,991.86, 10,485.29 and 2,311.01

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Solution

The fourth proportional to 6,991.86, 10,485.29 and 2,311.01 is: 3,465.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,991.86 : 10,485.29 = 2,311.01 : x
  2. Step 2: Convert to fraction form
    6,991.86/10,485.29 = 2,311.01/x
  3. Step 3: Cross multiply
    6,991.86x = 10,485.29 × 2,311.01
  4. Step 4: Simplify right side
    6,991.86x = 24,231,563.39
  5. Step 5: Solve for x
    x = 24,231,563.39/6,991.86
  6. Step 6: Final answer
    x = 3,465.68

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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.