Home / 3,991.48-5,511.65-2,501.89

Finding the Fourth Proportional to 3,991.48, 5,511.65 and 2,501.89

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Solution

The fourth proportional to 3,991.48, 5,511.65 and 2,501.89 is: 3,454.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,991.48 : 5,511.65 = 2,501.89 : x
  2. Step 2: Convert to fraction form
    3,991.48/5,511.65 = 2,501.89/x
  3. Step 3: Cross multiply
    3,991.48x = 5,511.65 × 2,501.89
  4. Step 4: Simplify right side
    3,991.48x = 13,789,515.73
  5. Step 5: Solve for x
    x = 13,789,515.73/3,991.48
  6. Step 6: Final answer
    x = 3,454.74

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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.