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Finding the Fourth Proportional to 8,622, 11,903.94 and 6,730.32

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Solution

The fourth proportional to 8,622, 11,903.94 and 6,730.32 is: 9,292.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622 : 11,903.94 = 6,730.32 : x
  2. Step 2: Convert to fraction form
    8,622/11,903.94 = 6,730.32/x
  3. Step 3: Cross multiply
    8,622x = 11,903.94 × 6,730.32
  4. Step 4: Simplify right side
    8,622x = 80,117,325.46
  5. Step 5: Solve for x
    x = 80,117,325.46/8,622
  6. Step 6: Final answer
    x = 9,292.20

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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.