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Finding the Fourth Proportional to 8,968.50, 13,454.91 and 2,812.50

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Solution

The fourth proportional to 8,968.50, 13,454.91 and 2,812.50 is: 4,219.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,968.50 : 13,454.91 = 2,812.50 : x
  2. Step 2: Convert to fraction form
    8,968.50/13,454.91 = 2,812.50/x
  3. Step 3: Cross multiply
    8,968.50x = 13,454.91 × 2,812.50
  4. Step 4: Simplify right side
    8,968.50x = 37,841,934.38
  5. Step 5: Solve for x
    x = 37,841,934.38/8,968.50
  6. Step 6: Final answer
    x = 4,219.43

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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.