Home / 2,856.78-3,942.45-1,597.80

Finding the Fourth Proportional to 2,856.78, 3,942.45 and 1,597.80

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Solution

The fourth proportional to 2,856.78, 3,942.45 and 1,597.80 is: 2,205.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.78 : 3,942.45 = 1,597.80 : x
  2. Step 2: Convert to fraction form
    2,856.78/3,942.45 = 1,597.80/x
  3. Step 3: Cross multiply
    2,856.78x = 3,942.45 × 1,597.80
  4. Step 4: Simplify right side
    2,856.78x = 6,299,246.61
  5. Step 5: Solve for x
    x = 6,299,246.61/2,856.78
  6. Step 6: Final answer
    x = 2,205.02

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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.