Home / 2,770.40-3,823.16-1,511.43

Finding the Fourth Proportional to 2,770.40, 3,823.16 and 1,511.43

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Solution

The fourth proportional to 2,770.40, 3,823.16 and 1,511.43 is: 2,085.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.40 : 3,823.16 = 1,511.43 : x
  2. Step 2: Convert to fraction form
    2,770.40/3,823.16 = 1,511.43/x
  3. Step 3: Cross multiply
    2,770.40x = 3,823.16 × 1,511.43
  4. Step 4: Simplify right side
    2,770.40x = 5,778,431.16
  5. Step 5: Solve for x
    x = 5,778,431.16/2,770.40
  6. Step 6: Final answer
    x = 2,085.78

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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.