Home / 2,328.33-3,489.21-1,288.80

Finding the Fourth Proportional to 2,328.33, 3,489.21 and 1,288.80

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Solution

The fourth proportional to 2,328.33, 3,489.21 and 1,288.80 is: 1,931.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,328.33 : 3,489.21 = 1,288.80 : x
  2. Step 2: Convert to fraction form
    2,328.33/3,489.21 = 1,288.80/x
  3. Step 3: Cross multiply
    2,328.33x = 3,489.21 × 1,288.80
  4. Step 4: Simplify right side
    2,328.33x = 4,496,893.85
  5. Step 5: Solve for x
    x = 4,496,893.85/2,328.33
  6. Step 6: Final answer
    x = 1,931.38

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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.