Home / 2,776.12-3,830.41-1,878.23

Finding the Fourth Proportional to 2,776.12, 3,830.41 and 1,878.23

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Solution

The fourth proportional to 2,776.12, 3,830.41 and 1,878.23 is: 2,591.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.12 : 3,830.41 = 1,878.23 : x
  2. Step 2: Convert to fraction form
    2,776.12/3,830.41 = 1,878.23/x
  3. Step 3: Cross multiply
    2,776.12x = 3,830.41 × 1,878.23
  4. Step 4: Simplify right side
    2,776.12x = 7,194,381.58
  5. Step 5: Solve for x
    x = 7,194,381.58/2,776.12
  6. Step 6: Final answer
    x = 2,591.53

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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.