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Finding the Fourth Proportional to 8,642.67, 11,908.89 and 6,751.32

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Solution

The fourth proportional to 8,642.67, 11,908.89 and 6,751.32 is: 9,302.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.67 : 11,908.89 = 6,751.32 : x
  2. Step 2: Convert to fraction form
    8,642.67/11,908.89 = 6,751.32/x
  3. Step 3: Cross multiply
    8,642.67x = 11,908.89 × 6,751.32
  4. Step 4: Simplify right side
    8,642.67x = 80,400,727.23
  5. Step 5: Solve for x
    x = 80,400,727.23/8,642.67
  6. Step 6: Final answer
    x = 9,302.76

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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.