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Finding the Fourth Proportional to 9,117.78, 13,662.06 and 8,797.02

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Solution

The fourth proportional to 9,117.78, 13,662.06 and 8,797.02 is: 13,181.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,117.78 : 13,662.06 = 8,797.02 : x
  2. Step 2: Convert to fraction form
    9,117.78/13,662.06 = 8,797.02/x
  3. Step 3: Cross multiply
    9,117.78x = 13,662.06 × 8,797.02
  4. Step 4: Simplify right side
    9,117.78x = 120,185,415.06
  5. Step 5: Solve for x
    x = 120,185,415.06/9,117.78
  6. Step 6: Final answer
    x = 13,181.43

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1.5x scale

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.