Home / 2,189.77-3,281.65-1,409.33

Finding the Fourth Proportional to 2,189.77, 3,281.65 and 1,409.33

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Solution

The fourth proportional to 2,189.77, 3,281.65 and 1,409.33 is: 2,112.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.77 : 3,281.65 = 1,409.33 : x
  2. Step 2: Convert to fraction form
    2,189.77/3,281.65 = 1,409.33/x
  3. Step 3: Cross multiply
    2,189.77x = 3,281.65 × 1,409.33
  4. Step 4: Simplify right side
    2,189.77x = 4,624,932.48
  5. Step 5: Solve for x
    x = 4,624,932.48/2,189.77
  6. Step 6: Final answer
    x = 2,112.07

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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.