Home / 7,780.98-11,675.43-3,397.89

Finding the Fourth Proportional to 7,780.98, 11,675.43 and 3,397.89

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Solution

The fourth proportional to 7,780.98, 11,675.43 and 3,397.89 is: 5,098.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.98 : 11,675.43 = 3,397.89 : x
  2. Step 2: Convert to fraction form
    7,780.98/11,675.43 = 3,397.89/x
  3. Step 3: Cross multiply
    7,780.98x = 11,675.43 × 3,397.89
  4. Step 4: Simplify right side
    7,780.98x = 39,671,826.84
  5. Step 5: Solve for x
    x = 39,671,826.84/7,780.98
  6. Step 6: Final answer
    x = 5,098.56

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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.