Home / 2,909.41-4,362.46-1,986.09

Finding the Fourth Proportional to 2,909.41, 4,362.46 and 1,986.09

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Solution

The fourth proportional to 2,909.41, 4,362.46 and 1,986.09 is: 2,978.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.41 : 4,362.46 = 1,986.09 : x
  2. Step 2: Convert to fraction form
    2,909.41/4,362.46 = 1,986.09/x
  3. Step 3: Cross multiply
    2,909.41x = 4,362.46 × 1,986.09
  4. Step 4: Simplify right side
    2,909.41x = 8,664,228.03
  5. Step 5: Solve for x
    x = 8,664,228.03/2,909.41
  6. Step 6: Final answer
    x = 2,978.00

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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.