Home / 1,986.59-2,740.86-1,323.56

Finding the Fourth Proportional to 1,986.59, 2,740.86 and 1,323.56

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Solution

The fourth proportional to 1,986.59, 2,740.86 and 1,323.56 is: 1,826.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.59 : 2,740.86 = 1,323.56 : x
  2. Step 2: Convert to fraction form
    1,986.59/2,740.86 = 1,323.56/x
  3. Step 3: Cross multiply
    1,986.59x = 2,740.86 × 1,323.56
  4. Step 4: Simplify right side
    1,986.59x = 3,627,692.66
  5. Step 5: Solve for x
    x = 3,627,692.66/1,986.59
  6. Step 6: Final answer
    x = 1,826.09

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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.