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Finding the Fourth Proportional to 3,603.39, 5,400.47 and 2,779.94

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Solution

The fourth proportional to 3,603.39, 5,400.47 and 2,779.94 is: 4,166.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,603.39 : 5,400.47 = 2,779.94 : x
  2. Step 2: Convert to fraction form
    3,603.39/5,400.47 = 2,779.94/x
  3. Step 3: Cross multiply
    3,603.39x = 5,400.47 × 2,779.94
  4. Step 4: Simplify right side
    3,603.39x = 15,012,982.57
  5. Step 5: Solve for x
    x = 15,012,982.57/3,603.39
  6. Step 6: Final answer
    x = 4,166.35

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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.