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Finding the Fourth Proportional to 8,665.55, 11,958.42 and 4,686.67

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Solution

The fourth proportional to 8,665.55, 11,958.42 and 4,686.67 is: 6,467.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,665.55 : 11,958.42 = 4,686.67 : x
  2. Step 2: Convert to fraction form
    8,665.55/11,958.42 = 4,686.67/x
  3. Step 3: Cross multiply
    8,665.55x = 11,958.42 × 4,686.67
  4. Step 4: Simplify right side
    8,665.55x = 56,045,108.47
  5. Step 5: Solve for x
    x = 56,045,108.47/8,665.55
  6. Step 6: Final answer
    x = 6,467.58

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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.