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Finding the Fourth Proportional to 8,453.90, 12,609.38 and 7,966.08

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Solution

The fourth proportional to 8,453.90, 12,609.38 and 7,966.08 is: 11,881.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,453.90 : 12,609.38 = 7,966.08 : x
  2. Step 2: Convert to fraction form
    8,453.90/12,609.38 = 7,966.08/x
  3. Step 3: Cross multiply
    8,453.90x = 12,609.38 × 7,966.08
  4. Step 4: Simplify right side
    8,453.90x = 100,447,290
  5. Step 5: Solve for x
    x = 100,447,290/8,453.90
  6. Step 6: Final answer
    x = 11,881.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.