Home / 1,995.30-2,989.61-1,409.33

Finding the Fourth Proportional to 1,995.30, 2,989.61 and 1,409.33

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Solution

The fourth proportional to 1,995.30, 2,989.61 and 1,409.33 is: 2,111.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995.30 : 2,989.61 = 1,409.33 : x
  2. Step 2: Convert to fraction form
    1,995.30/2,989.61 = 1,409.33/x
  3. Step 3: Cross multiply
    1,995.30x = 2,989.61 × 1,409.33
  4. Step 4: Simplify right side
    1,995.30x = 4,213,352.77
  5. Step 5: Solve for x
    x = 4,213,352.77/1,995.30
  6. Step 6: Final answer
    x = 2,111.64

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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.