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Finding the Fourth Proportional to 4,998.50, 6,897.93 and 2,790.50

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Solution

The fourth proportional to 4,998.50, 6,897.93 and 2,790.50 is: 3,850.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,998.50 : 6,897.93 = 2,790.50 : x
  2. Step 2: Convert to fraction form
    4,998.50/6,897.93 = 2,790.50/x
  3. Step 3: Cross multiply
    4,998.50x = 6,897.93 × 2,790.50
  4. Step 4: Simplify right side
    4,998.50x = 19,248,673.67
  5. Step 5: Solve for x
    x = 19,248,673.67/4,998.50
  6. Step 6: Final answer
    x = 3,850.89

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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.