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Finding the Fourth Proportional to 8,690.37, 13,031.43 and 4,008.99

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Solution

The fourth proportional to 8,690.37, 13,031.43 and 4,008.99 is: 6,011.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.37 : 13,031.43 = 4,008.99 : x
  2. Step 2: Convert to fraction form
    8,690.37/13,031.43 = 4,008.99/x
  3. Step 3: Cross multiply
    8,690.37x = 13,031.43 × 4,008.99
  4. Step 4: Simplify right side
    8,690.37x = 52,242,872.56
  5. Step 5: Solve for x
    x = 52,242,872.56/8,690.37
  6. Step 6: Final answer
    x = 6,011.58

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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.