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Finding the Fourth Proportional to 8,673.30, 12,988.98 and 4,964.29

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Solution

The fourth proportional to 8,673.30, 12,988.98 and 4,964.29 is: 7,434.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,673.30 : 12,988.98 = 4,964.29 : x
  2. Step 2: Convert to fraction form
    8,673.30/12,988.98 = 4,964.29/x
  3. Step 3: Cross multiply
    8,673.30x = 12,988.98 × 4,964.29
  4. Step 4: Simplify right side
    8,673.30x = 64,481,031.05
  5. Step 5: Solve for x
    x = 64,481,031.05/8,673.30
  6. Step 6: Final answer
    x = 7,434.43

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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.