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Finding the Fourth Proportional to 8,699, 12,004.62 and 4,922.09

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Solution

The fourth proportional to 8,699, 12,004.62 and 4,922.09 is: 6,792.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699 : 12,004.62 = 4,922.09 : x
  2. Step 2: Convert to fraction form
    8,699/12,004.62 = 4,922.09/x
  3. Step 3: Cross multiply
    8,699x = 12,004.62 × 4,922.09
  4. Step 4: Simplify right side
    8,699x = 59,087,820.06
  5. Step 5: Solve for x
    x = 59,087,820.06/8,699
  6. Step 6: Final answer
    x = 6,792.48

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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.