Home / 1,679.42-2,516.55-1,129.56

Finding the Fourth Proportional to 1,679.42, 2,516.55 and 1,129.56

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Solution

The fourth proportional to 1,679.42, 2,516.55 and 1,129.56 is: 1,692.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.42 : 2,516.55 = 1,129.56 : x
  2. Step 2: Convert to fraction form
    1,679.42/2,516.55 = 1,129.56/x
  3. Step 3: Cross multiply
    1,679.42x = 2,516.55 × 1,129.56
  4. Step 4: Simplify right side
    1,679.42x = 2,842,594.22
  5. Step 5: Solve for x
    x = 2,842,594.22/1,679.42
  6. Step 6: Final answer
    x = 1,692.61

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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.