Home / 6,984.29-9,638.39-3,840.50

Finding the Fourth Proportional to 6,984.29, 9,638.39 and 3,840.50

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Solution

The fourth proportional to 6,984.29, 9,638.39 and 3,840.50 is: 5,299.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,984.29 : 9,638.39 = 3,840.50 : x
  2. Step 2: Convert to fraction form
    6,984.29/9,638.39 = 3,840.50/x
  3. Step 3: Cross multiply
    6,984.29x = 9,638.39 × 3,840.50
  4. Step 4: Simplify right side
    6,984.29x = 37,016,236.80
  5. Step 5: Solve for x
    x = 37,016,236.80/6,984.29
  6. Step 6: Final answer
    x = 5,299.93

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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.