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Finding the Fourth Proportional to 9,276.87, 12,797.68 and 8,918.90

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Solution

The fourth proportional to 9,276.87, 12,797.68 and 8,918.90 is: 12,303.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,276.87 : 12,797.68 = 8,918.90 : x
  2. Step 2: Convert to fraction form
    9,276.87/12,797.68 = 8,918.90/x
  3. Step 3: Cross multiply
    9,276.87x = 12,797.68 × 8,918.90
  4. Step 4: Simplify right side
    9,276.87x = 114,141,119.57
  5. Step 5: Solve for x
    x = 114,141,119.57/9,276.87
  6. Step 6: Final answer
    x = 12,303.84

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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.