Home / 2,770.79-3,823.63-1,511.80

Finding the Fourth Proportional to 2,770.79, 3,823.63 and 1,511.80

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Solution

The fourth proportional to 2,770.79, 3,823.63 and 1,511.80 is: 2,086.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.79 : 3,823.63 = 1,511.80 : x
  2. Step 2: Convert to fraction form
    2,770.79/3,823.63 = 1,511.80/x
  3. Step 3: Cross multiply
    2,770.79x = 3,823.63 × 1,511.80
  4. Step 4: Simplify right side
    2,770.79x = 5,780,554.75
  5. Step 5: Solve for x
    x = 5,780,554.75/2,770.79
  6. Step 6: Final answer
    x = 2,086.25

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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.