Home / 1,986.61-2,740.87-1,323.56

Finding the Fourth Proportional to 1,986.61, 2,740.87 and 1,323.56

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Solution

The fourth proportional to 1,986.61, 2,740.87 and 1,323.56 is: 1,826.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.61 : 2,740.87 = 1,323.56 : x
  2. Step 2: Convert to fraction form
    1,986.61/2,740.87 = 1,323.56/x
  3. Step 3: Cross multiply
    1,986.61x = 2,740.87 × 1,323.56
  4. Step 4: Simplify right side
    1,986.61x = 3,627,705.90
  5. Step 5: Solve for x
    x = 3,627,705.90/1,986.61
  6. Step 6: Final answer
    x = 1,826.08

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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.