Home / 2,770.14-3,822.80-1,511.20

Finding the Fourth Proportional to 2,770.14, 3,822.80 and 1,511.20

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Solution

The fourth proportional to 2,770.14, 3,822.80 and 1,511.20 is: 2,085.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.14 : 3,822.80 = 1,511.20 : x
  2. Step 2: Convert to fraction form
    2,770.14/3,822.80 = 1,511.20/x
  3. Step 3: Cross multiply
    2,770.14x = 3,822.80 × 1,511.20
  4. Step 4: Simplify right side
    2,770.14x = 5,777,012.58
  5. Step 5: Solve for x
    x = 5,777,012.58/2,770.14
  6. Step 6: Final answer
    x = 2,085.46

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1.5x scale

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.