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Finding the Fourth Proportional to 1,770.21, 2,651.21 and 1,708.71

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Solution

The fourth proportional to 1,770.21, 2,651.21 and 1,708.71 is: 2,559.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.21 : 2,651.21 = 1,708.71 : x
  2. Step 2: Convert to fraction form
    1,770.21/2,651.21 = 1,708.71/x
  3. Step 3: Cross multiply
    1,770.21x = 2,651.21 × 1,708.71
  4. Step 4: Simplify right side
    1,770.21x = 4,530,140.50
  5. Step 5: Solve for x
    x = 4,530,140.50/1,770.21
  6. Step 6: Final answer
    x = 2,559.10

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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.