Home / 2,780.33-3,836.70-1,521.32

Finding the Fourth Proportional to 2,780.33, 3,836.70 and 1,521.32

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Solution

The fourth proportional to 2,780.33, 3,836.70 and 1,521.32 is: 2,099.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.33 : 3,836.70 = 1,521.32 : x
  2. Step 2: Convert to fraction form
    2,780.33/3,836.70 = 1,521.32/x
  3. Step 3: Cross multiply
    2,780.33x = 3,836.70 × 1,521.32
  4. Step 4: Simplify right side
    2,780.33x = 5,836,829.26
  5. Step 5: Solve for x
    x = 5,836,829.26/2,780.33
  6. Step 6: Final answer
    x = 2,099.33

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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.