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Finding the Fourth Proportional to 8,668.68, 12,983.16 and 7,671.18

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Solution

The fourth proportional to 8,668.68, 12,983.16 and 7,671.18 is: 11,489.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.68 : 12,983.16 = 7,671.18 : x
  2. Step 2: Convert to fraction form
    8,668.68/12,983.16 = 7,671.18/x
  3. Step 3: Cross multiply
    8,668.68x = 12,983.16 × 7,671.18
  4. Step 4: Simplify right side
    8,668.68x = 99,596,157.33
  5. Step 5: Solve for x
    x = 99,596,157.33/8,668.68
  6. Step 6: Final answer
    x = 11,489.20

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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.