Home / 6,389.25-8,815.39-3,836.34

Finding the Fourth Proportional to 6,389.25, 8,815.39 and 3,836.34

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Solution

The fourth proportional to 6,389.25, 8,815.39 and 3,836.34 is: 5,293.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.25 : 8,815.39 = 3,836.34 : x
  2. Step 2: Convert to fraction form
    6,389.25/8,815.39 = 3,836.34/x
  3. Step 3: Cross multiply
    6,389.25x = 8,815.39 × 3,836.34
  4. Step 4: Simplify right side
    6,389.25x = 33,818,814.09
  5. Step 5: Solve for x
    x = 33,818,814.09/6,389.25
  6. Step 6: Final answer
    x = 5,293.08

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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.