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Finding the Fourth Proportional to 8,040.78, 11,095.99 and 4,455.90

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Solution

The fourth proportional to 8,040.78, 11,095.99 and 4,455.90 is: 6,148.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,040.78 : 11,095.99 = 4,455.90 : x
  2. Step 2: Convert to fraction form
    8,040.78/11,095.99 = 4,455.90/x
  3. Step 3: Cross multiply
    8,040.78x = 11,095.99 × 4,455.90
  4. Step 4: Simplify right side
    8,040.78x = 49,442,616.25
  5. Step 5: Solve for x
    x = 49,442,616.25/8,040.78
  6. Step 6: Final answer
    x = 6,148.98

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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.