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Finding the Fourth Proportional to 5,619.60, 7,755.03 and 3,101.86

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Solution

The fourth proportional to 5,619.60, 7,755.03 and 3,101.86 is: 4,280.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.60 : 7,755.03 = 3,101.86 : x
  2. Step 2: Convert to fraction form
    5,619.60/7,755.03 = 3,101.86/x
  3. Step 3: Cross multiply
    5,619.60x = 7,755.03 × 3,101.86
  4. Step 4: Simplify right side
    5,619.60x = 24,055,017.36
  5. Step 5: Solve for x
    x = 24,055,017.36/5,619.60
  6. Step 6: Final answer
    x = 4,280.56

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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.