Home / 2,379.90-3,283.40-1,384.80

Finding the Fourth Proportional to 2,379.90, 3,283.40 and 1,384.80

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Solution

The fourth proportional to 2,379.90, 3,283.40 and 1,384.80 is: 1,910.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.90 : 3,283.40 = 1,384.80 : x
  2. Step 2: Convert to fraction form
    2,379.90/3,283.40 = 1,384.80/x
  3. Step 3: Cross multiply
    2,379.90x = 3,283.40 × 1,384.80
  4. Step 4: Simplify right side
    2,379.90x = 4,546,852.32
  5. Step 5: Solve for x
    x = 4,546,852.32/2,379.90
  6. Step 6: Final answer
    x = 1,910.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.