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Finding the Fourth Proportional to 8,997.68, 12,415.38 and 5,018.60

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Solution

The fourth proportional to 8,997.68, 12,415.38 and 5,018.60 is: 6,924.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,997.68 : 12,415.38 = 5,018.60 : x
  2. Step 2: Convert to fraction form
    8,997.68/12,415.38 = 5,018.60/x
  3. Step 3: Cross multiply
    8,997.68x = 12,415.38 × 5,018.60
  4. Step 4: Simplify right side
    8,997.68x = 62,307,826.07
  5. Step 5: Solve for x
    x = 62,307,826.07/8,997.68
  6. Step 6: Final answer
    x = 6,924.88

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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.