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Finding the Fourth Proportional to 1,806.21, 2,709.51 and 573.81

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Solution

The fourth proportional to 1,806.21, 2,709.51 and 573.81 is: 860.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.21 : 2,709.51 = 573.81 : x
  2. Step 2: Convert to fraction form
    1,806.21/2,709.51 = 573.81/x
  3. Step 3: Cross multiply
    1,806.21x = 2,709.51 × 573.81
  4. Step 4: Simplify right side
    1,806.21x = 1,554,743.93
  5. Step 5: Solve for x
    x = 1,554,743.93/1,806.21
  6. Step 6: Final answer
    x = 860.78

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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.