Home / 5,214.28-7,826.10-2,618.68

Finding the Fourth Proportional to 5,214.28, 7,826.10 and 2,618.68

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Solution

The fourth proportional to 5,214.28, 7,826.10 and 2,618.68 is: 3,930.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,214.28 : 7,826.10 = 2,618.68 : x
  2. Step 2: Convert to fraction form
    5,214.28/7,826.10 = 2,618.68/x
  3. Step 3: Cross multiply
    5,214.28x = 7,826.10 × 2,618.68
  4. Step 4: Simplify right side
    5,214.28x = 20,494,051.55
  5. Step 5: Solve for x
    x = 20,494,051.55/5,214.28
  6. Step 6: Final answer
    x = 3,930.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.