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Finding the Fourth Proportional to 6,512.86, 8,985.60 and 3,679.89

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Solution

The fourth proportional to 6,512.86, 8,985.60 and 3,679.89 is: 5,077.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,512.86 : 8,985.60 = 3,679.89 : x
  2. Step 2: Convert to fraction form
    6,512.86/8,985.60 = 3,679.89/x
  3. Step 3: Cross multiply
    6,512.86x = 8,985.60 × 3,679.89
  4. Step 4: Simplify right side
    6,512.86x = 33,065,985.89
  5. Step 5: Solve for x
    x = 33,065,985.89/6,512.86
  6. Step 6: Final answer
    x = 5,077.03

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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.