Home / 2,776.45-3,827.44-2,112.15

Finding the Fourth Proportional to 2,776.45, 3,827.44 and 2,112.15

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Solution

The fourth proportional to 2,776.45, 3,827.44 and 2,112.15 is: 2,911.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,776.45 : 3,827.44 = 2,112.15 : x
  2. Step 2: Convert to fraction form
    2,776.45/3,827.44 = 2,112.15/x
  3. Step 3: Cross multiply
    2,776.45x = 3,827.44 × 2,112.15
  4. Step 4: Simplify right side
    2,776.45x = 8,084,123.11
  5. Step 5: Solve for x
    x = 8,084,123.11/2,776.45
  6. Step 6: Final answer
    x = 2,911.68

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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.