Home / 8,781.36-13,174.20-6,189.36

Finding the Fourth Proportional to 8,781.36, 13,174.20 and 6,189.36

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Solution

The fourth proportional to 8,781.36, 13,174.20 and 6,189.36 is: 9,285.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.36 : 13,174.20 = 6,189.36 : x
  2. Step 2: Convert to fraction form
    8,781.36/13,174.20 = 6,189.36/x
  3. Step 3: Cross multiply
    8,781.36x = 13,174.20 × 6,189.36
  4. Step 4: Simplify right side
    8,781.36x = 81,539,866.51
  5. Step 5: Solve for x
    x = 81,539,866.51/8,781.36
  6. Step 6: Final answer
    x = 9,285.56

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1.5x scale

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.