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Finding the Fourth Proportional to 8,786.64, 12,119.88 and 6,546.64

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Solution

The fourth proportional to 8,786.64, 12,119.88 and 6,546.64 is: 9,030.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.64 : 12,119.88 = 6,546.64 : x
  2. Step 2: Convert to fraction form
    8,786.64/12,119.88 = 6,546.64/x
  3. Step 3: Cross multiply
    8,786.64x = 12,119.88 × 6,546.64
  4. Step 4: Simplify right side
    8,786.64x = 79,344,491.20
  5. Step 5: Solve for x
    x = 79,344,491.20/8,786.64
  6. Step 6: Final answer
    x = 9,030.13

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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.