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Finding the Fourth Proportional to 8,997.78, 12,416.04 and 5,460.78

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Solution

The fourth proportional to 8,997.78, 12,416.04 and 5,460.78 is: 7,535.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,997.78 : 12,416.04 = 5,460.78 : x
  2. Step 2: Convert to fraction form
    8,997.78/12,416.04 = 5,460.78/x
  3. Step 3: Cross multiply
    8,997.78x = 12,416.04 × 5,460.78
  4. Step 4: Simplify right side
    8,997.78x = 67,801,262.91
  5. Step 5: Solve for x
    x = 67,801,262.91/8,997.78
  6. Step 6: Final answer
    x = 7,535.33

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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.