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Finding the Fourth Proportional to 2,856.94, 3,942.48 and 1,677.94

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Solution

The fourth proportional to 2,856.94, 3,942.48 and 1,677.94 is: 2,315.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.94 : 3,942.48 = 1,677.94 : x
  2. Step 2: Convert to fraction form
    2,856.94/3,942.48 = 1,677.94/x
  3. Step 3: Cross multiply
    2,856.94x = 3,942.48 × 1,677.94
  4. Step 4: Simplify right side
    2,856.94x = 6,615,244.89
  5. Step 5: Solve for x
    x = 6,615,244.89/2,856.94
  6. Step 6: Final answer
    x = 2,315.50

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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.