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Finding the Fourth Proportional to 3,980.94, 5,970.52 and 2,603.94

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Solution

The fourth proportional to 3,980.94, 5,970.52 and 2,603.94 is: 3,905.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.94 : 5,970.52 = 2,603.94 : x
  2. Step 2: Convert to fraction form
    3,980.94/5,970.52 = 2,603.94/x
  3. Step 3: Cross multiply
    3,980.94x = 5,970.52 × 2,603.94
  4. Step 4: Simplify right side
    3,980.94x = 15,546,875.85
  5. Step 5: Solve for x
    x = 15,546,875.85/3,980.94
  6. Step 6: Final answer
    x = 3,905.33

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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.