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Finding the Fourth Proportional to 2,603.85, 3,903.87 and 1,779.54

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Solution

The fourth proportional to 2,603.85, 3,903.87 and 1,779.54 is: 2,668.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,603.85 : 3,903.87 = 1,779.54 : x
  2. Step 2: Convert to fraction form
    2,603.85/3,903.87 = 1,779.54/x
  3. Step 3: Cross multiply
    2,603.85x = 3,903.87 × 1,779.54
  4. Step 4: Simplify right side
    2,603.85x = 6,947,092.82
  5. Step 5: Solve for x
    x = 6,947,092.82/2,603.85
  6. Step 6: Final answer
    x = 2,668.01

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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.