Home / 2,774.72-3,821.28-2,555.84

Finding the Fourth Proportional to 2,774.72, 3,821.28 and 2,555.84

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Solution

The fourth proportional to 2,774.72, 3,821.28 and 2,555.84 is: 3,519.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.72 : 3,821.28 = 2,555.84 : x
  2. Step 2: Convert to fraction form
    2,774.72/3,821.28 = 2,555.84/x
  3. Step 3: Cross multiply
    2,774.72x = 3,821.28 × 2,555.84
  4. Step 4: Simplify right side
    2,774.72x = 9,766,580.28
  5. Step 5: Solve for x
    x = 9,766,580.28/2,774.72
  6. Step 6: Final answer
    x = 3,519.84

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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.