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Finding the Fourth Proportional to 8,666.32, 12,998.11 and 2,425.67

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Solution

The fourth proportional to 8,666.32, 12,998.11 and 2,425.67 is: 3,638.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,666.32 : 12,998.11 = 2,425.67 : x
  2. Step 2: Convert to fraction form
    8,666.32/12,998.11 = 2,425.67/x
  3. Step 3: Cross multiply
    8,666.32x = 12,998.11 × 2,425.67
  4. Step 4: Simplify right side
    8,666.32x = 31,529,125.48
  5. Step 5: Solve for x
    x = 31,529,125.48/8,666.32
  6. Step 6: Final answer
    x = 3,638.12

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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.