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Finding the Fourth Proportional to 8,968.86, 13,513.14 and 8,125.62

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Solution

The fourth proportional to 8,968.86, 13,513.14 and 8,125.62 is: 12,242.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.86 : 13,513.14 = 8,125.62 : x
  2. Step 2: Convert to fraction form
    8,968.86/13,513.14 = 8,125.62/x
  3. Step 3: Cross multiply
    8,968.86x = 13,513.14 × 8,125.62
  4. Step 4: Simplify right side
    8,968.86x = 109,802,640.65
  5. Step 5: Solve for x
    x = 109,802,640.65/8,968.86
  6. Step 6: Final answer
    x = 12,242.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.