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Finding the Fourth Proportional to 8,666.02, 11,958.21 and 6,398.57

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Solution

The fourth proportional to 8,666.02, 11,958.21 and 6,398.57 is: 8,829.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,666.02 : 11,958.21 = 6,398.57 : x
  2. Step 2: Convert to fraction form
    8,666.02/11,958.21 = 6,398.57/x
  3. Step 3: Cross multiply
    8,666.02x = 11,958.21 × 6,398.57
  4. Step 4: Simplify right side
    8,666.02x = 76,515,443.76
  5. Step 5: Solve for x
    x = 76,515,443.76/8,666.02
  6. Step 6: Final answer
    x = 8,829.36

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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.