Home / 3,189.42-4,784.79-1,339.46

Finding the Fourth Proportional to 3,189.42, 4,784.79 and 1,339.46

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Solution

The fourth proportional to 3,189.42, 4,784.79 and 1,339.46 is: 2,009.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.42 : 4,784.79 = 1,339.46 : x
  2. Step 2: Convert to fraction form
    3,189.42/4,784.79 = 1,339.46/x
  3. Step 3: Cross multiply
    3,189.42x = 4,784.79 × 1,339.46
  4. Step 4: Simplify right side
    3,189.42x = 6,409,010.89
  5. Step 5: Solve for x
    x = 6,409,010.89/3,189.42
  6. Step 6: Final answer
    x = 2,009.46

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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.