Home / 7,836.90-11,751.33-2,638.98

Finding the Fourth Proportional to 7,836.90, 11,751.33 and 2,638.98

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Solution

The fourth proportional to 7,836.90, 11,751.33 and 2,638.98 is: 3,957.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,836.90 : 11,751.33 = 2,638.98 : x
  2. Step 2: Convert to fraction form
    7,836.90/11,751.33 = 2,638.98/x
  3. Step 3: Cross multiply
    7,836.90x = 11,751.33 × 2,638.98
  4. Step 4: Simplify right side
    7,836.90x = 31,011,524.84
  5. Step 5: Solve for x
    x = 31,011,524.84/7,836.90
  6. Step 6: Final answer
    x = 3,957.12

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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.