Home / 8,298.78-12,450.26-6,820.39

Finding the Fourth Proportional to 8,298.78, 12,450.26 and 6,820.39

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Solution

The fourth proportional to 8,298.78, 12,450.26 and 6,820.39 is: 10,232.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,298.78 : 12,450.26 = 6,820.39 : x
  2. Step 2: Convert to fraction form
    8,298.78/12,450.26 = 6,820.39/x
  3. Step 3: Cross multiply
    8,298.78x = 12,450.26 × 6,820.39
  4. Step 4: Simplify right side
    8,298.78x = 84,915,628.80
  5. Step 5: Solve for x
    x = 84,915,628.80/8,298.78
  6. Step 6: Final answer
    x = 10,232.30

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1.5x scale

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.