Home / 2,778.84-3,835.62-2,256.12

Finding the Fourth Proportional to 2,778.84, 3,835.62 and 2,256.12

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Solution

The fourth proportional to 2,778.84, 3,835.62 and 2,256.12 is: 3,114.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.84 : 3,835.62 = 2,256.12 : x
  2. Step 2: Convert to fraction form
    2,778.84/3,835.62 = 2,256.12/x
  3. Step 3: Cross multiply
    2,778.84x = 3,835.62 × 2,256.12
  4. Step 4: Simplify right side
    2,778.84x = 8,653,618.99
  5. Step 5: Solve for x
    x = 8,653,618.99/2,778.84
  6. Step 6: Final answer
    x = 3,114.11

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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.