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Finding the Fourth Proportional to 5,485.78, 7,567.96 and 3,495.88

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Solution

The fourth proportional to 5,485.78, 7,567.96 and 3,495.88 is: 4,822.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485.78 : 7,567.96 = 3,495.88 : x
  2. Step 2: Convert to fraction form
    5,485.78/7,567.96 = 3,495.88/x
  3. Step 3: Cross multiply
    5,485.78x = 7,567.96 × 3,495.88
  4. Step 4: Simplify right side
    5,485.78x = 26,456,680.00
  5. Step 5: Solve for x
    x = 26,456,680.00/5,485.78
  6. Step 6: Final answer
    x = 4,822.77

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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.