Home / 8,620.14-12,930.26-3,426.02

Finding the Fourth Proportional to 8,620.14, 12,930.26 and 3,426.02

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Solution

The fourth proportional to 8,620.14, 12,930.26 and 3,426.02 is: 5,139.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.14 : 12,930.26 = 3,426.02 : x
  2. Step 2: Convert to fraction form
    8,620.14/12,930.26 = 3,426.02/x
  3. Step 3: Cross multiply
    8,620.14x = 12,930.26 × 3,426.02
  4. Step 4: Simplify right side
    8,620.14x = 44,299,329.37
  5. Step 5: Solve for x
    x = 44,299,329.37/8,620.14
  6. Step 6: Final answer
    x = 5,139.05

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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.