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Finding the Fourth Proportional to 8,625.51, 11,918.61 and 6,741.90

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Solution

The fourth proportional to 8,625.51, 11,918.61 and 6,741.90 is: 9,315.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.51 : 11,918.61 = 6,741.90 : x
  2. Step 2: Convert to fraction form
    8,625.51/11,918.61 = 6,741.90/x
  3. Step 3: Cross multiply
    8,625.51x = 11,918.61 × 6,741.90
  4. Step 4: Simplify right side
    8,625.51x = 80,354,076.76
  5. Step 5: Solve for x
    x = 80,354,076.76/8,625.51
  6. Step 6: Final answer
    x = 9,315.86

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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.