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Finding the Fourth Proportional to 2,795.78, 3,856.83 and 1,800.74

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Solution

The fourth proportional to 2,795.78, 3,856.83 and 1,800.74 is: 2,484.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,795.78 : 3,856.83 = 1,800.74 : x
  2. Step 2: Convert to fraction form
    2,795.78/3,856.83 = 1,800.74/x
  3. Step 3: Cross multiply
    2,795.78x = 3,856.83 × 1,800.74
  4. Step 4: Simplify right side
    2,795.78x = 6,945,148.05
  5. Step 5: Solve for x
    x = 6,945,148.05/2,795.78
  6. Step 6: Final answer
    x = 2,484.15

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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.