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Finding the Fourth Proportional to 8,674.55, 11,960.75 and 8,207.45

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Solution

The fourth proportional to 8,674.55, 11,960.75 and 8,207.45 is: 11,316.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.55 : 11,960.75 = 8,207.45 : x
  2. Step 2: Convert to fraction form
    8,674.55/11,960.75 = 8,207.45/x
  3. Step 3: Cross multiply
    8,674.55x = 11,960.75 × 8,207.45
  4. Step 4: Simplify right side
    8,674.55x = 98,167,216.55
  5. Step 5: Solve for x
    x = 98,167,216.55/8,674.55
  6. Step 6: Final answer
    x = 11,316.69

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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.