Home / 2,770.49-3,824.69-2,139.60

Finding the Fourth Proportional to 2,770.49, 3,824.69 and 2,139.60

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Solution

The fourth proportional to 2,770.49, 3,824.69 and 2,139.60 is: 2,953.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,770.49 : 3,824.69 = 2,139.60 : x
  2. Step 2: Convert to fraction form
    2,770.49/3,824.69 = 2,139.60/x
  3. Step 3: Cross multiply
    2,770.49x = 3,824.69 × 2,139.60
  4. Step 4: Simplify right side
    2,770.49x = 8,183,326.42
  5. Step 5: Solve for x
    x = 8,183,326.42/2,770.49
  6. Step 6: Final answer
    x = 2,953.74

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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.