Home / 1,771.21-2,439.17-1,765.81

Finding the Fourth Proportional to 1,771.21, 2,439.17 and 1,765.81

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Solution

The fourth proportional to 1,771.21, 2,439.17 and 1,765.81 is: 2,431.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,771.21 : 2,439.17 = 1,765.81 : x
  2. Step 2: Convert to fraction form
    1,771.21/2,439.17 = 1,765.81/x
  3. Step 3: Cross multiply
    1,771.21x = 2,439.17 × 1,765.81
  4. Step 4: Simplify right side
    1,771.21x = 4,307,101.95
  5. Step 5: Solve for x
    x = 4,307,101.95/1,771.21
  6. Step 6: Final answer
    x = 2,431.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.