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Finding the Fourth Proportional to 8,997.40, 12,411.42 and 5,270.68

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Solution

The fourth proportional to 8,997.40, 12,411.42 and 5,270.68 is: 7,270.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,997.40 : 12,411.42 = 5,270.68 : x
  2. Step 2: Convert to fraction form
    8,997.40/12,411.42 = 5,270.68/x
  3. Step 3: Cross multiply
    8,997.40x = 12,411.42 × 5,270.68
  4. Step 4: Simplify right side
    8,997.40x = 65,416,623.17
  5. Step 5: Solve for x
    x = 65,416,623.17/8,997.40
  6. Step 6: Final answer
    x = 7,270.61

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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.