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Finding the Fourth Proportional to 8,596.72, 12,885.24 and 3,970

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Solution

The fourth proportional to 8,596.72, 12,885.24 and 3,970 is: 5,950.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,596.72 : 12,885.24 = 3,970 : x
  2. Step 2: Convert to fraction form
    8,596.72/12,885.24 = 3,970/x
  3. Step 3: Cross multiply
    8,596.72x = 12,885.24 × 3,970
  4. Step 4: Simplify right side
    8,596.72x = 51,154,402.80
  5. Step 5: Solve for x
    x = 51,154,402.80/8,596.72
  6. Step 6: Final answer
    x = 5,950.46

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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.