Home / 6,219.78-8,583.30-3,861.92

Finding the Fourth Proportional to 6,219.78, 8,583.30 and 3,861.92

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Solution

The fourth proportional to 6,219.78, 8,583.30 and 3,861.92 is: 5,329.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,219.78 : 8,583.30 = 3,861.92 : x
  2. Step 2: Convert to fraction form
    6,219.78/8,583.30 = 3,861.92/x
  3. Step 3: Cross multiply
    6,219.78x = 8,583.30 × 3,861.92
  4. Step 4: Simplify right side
    6,219.78x = 33,148,017.94
  5. Step 5: Solve for x
    x = 33,148,017.94/6,219.78
  6. Step 6: Final answer
    x = 5,329.45

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1.5x scale

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.