Home / 2,776.68-4,164.90-1,858.80

Finding the Fourth Proportional to 2,776.68, 4,164.90 and 1,858.80

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Solution

The fourth proportional to 2,776.68, 4,164.90 and 1,858.80 is: 2,788.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.68 : 4,164.90 = 1,858.80 : x
  2. Step 2: Convert to fraction form
    2,776.68/4,164.90 = 1,858.80/x
  3. Step 3: Cross multiply
    2,776.68x = 4,164.90 × 1,858.80
  4. Step 4: Simplify right side
    2,776.68x = 7,741,716.12
  5. Step 5: Solve for x
    x = 7,741,716.12/2,776.68
  6. Step 6: Final answer
    x = 2,788.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.