Home / 2,759.69-3,808.40-1,581

Finding the Fourth Proportional to 2,759.69, 3,808.40 and 1,581

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Solution

The fourth proportional to 2,759.69, 3,808.40 and 1,581 is: 2,181.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,759.69 : 3,808.40 = 1,581 : x
  2. Step 2: Convert to fraction form
    2,759.69/3,808.40 = 1,581/x
  3. Step 3: Cross multiply
    2,759.69x = 3,808.40 × 1,581
  4. Step 4: Simplify right side
    2,759.69x = 6,021,072.50
  5. Step 5: Solve for x
    x = 6,021,072.50/2,759.69
  6. Step 6: Final answer
    x = 2,181.80

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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.