Home / 2,128.80-3,192.30-1,033.50

Finding the Fourth Proportional to 2,128.80, 3,192.30 and 1,033.50

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Solution

The fourth proportional to 2,128.80, 3,192.30 and 1,033.50 is: 1,549.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.80 : 3,192.30 = 1,033.50 : x
  2. Step 2: Convert to fraction form
    2,128.80/3,192.30 = 1,033.50/x
  3. Step 3: Cross multiply
    2,128.80x = 3,192.30 × 1,033.50
  4. Step 4: Simplify right side
    2,128.80x = 3,299,242.05
  5. Step 5: Solve for x
    x = 3,299,242.05/2,128.80
  6. Step 6: Final answer
    x = 1,549.81

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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.