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Finding the Fourth Proportional to 8,879.52, 13,290 and 7,907.52

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Solution

The fourth proportional to 8,879.52, 13,290 and 7,907.52 is: 11,835.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.52 : 13,290 = 7,907.52 : x
  2. Step 2: Convert to fraction form
    8,879.52/13,290 = 7,907.52/x
  3. Step 3: Cross multiply
    8,879.52x = 13,290 × 7,907.52
  4. Step 4: Simplify right side
    8,879.52x = 105,090,940.80
  5. Step 5: Solve for x
    x = 105,090,940.80/8,879.52
  6. Step 6: Final answer
    x = 11,835.21

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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.