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Finding the Fourth Proportional to 8,469.80, 11,681.10 and 6,698.33

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Solution

The fourth proportional to 8,469.80, 11,681.10 and 6,698.33 is: 9,237.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.80 : 11,681.10 = 6,698.33 : x
  2. Step 2: Convert to fraction form
    8,469.80/11,681.10 = 6,698.33/x
  3. Step 3: Cross multiply
    8,469.80x = 11,681.10 × 6,698.33
  4. Step 4: Simplify right side
    8,469.80x = 78,243,862.56
  5. Step 5: Solve for x
    x = 78,243,862.56/8,469.80
  6. Step 6: Final answer
    x = 9,237.98

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1.5x scale

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.