Home / 2,381.09-3,305.70-2,309.81

Finding the Fourth Proportional to 2,381.09, 3,305.70 and 2,309.81

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Solution

The fourth proportional to 2,381.09, 3,305.70 and 2,309.81 is: 3,206.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.09 : 3,305.70 = 2,309.81 : x
  2. Step 2: Convert to fraction form
    2,381.09/3,305.70 = 2,309.81/x
  3. Step 3: Cross multiply
    2,381.09x = 3,305.70 × 2,309.81
  4. Step 4: Simplify right side
    2,381.09x = 7,635,527.37
  5. Step 5: Solve for x
    x = 7,635,527.37/2,381.09
  6. Step 6: Final answer
    x = 3,206.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.