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Finding the Fourth Proportional to 8,572.67, 12,860.43 and 2,950.11

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Solution

The fourth proportional to 8,572.67, 12,860.43 and 2,950.11 is: 4,425.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.67 : 12,860.43 = 2,950.11 : x
  2. Step 2: Convert to fraction form
    8,572.67/12,860.43 = 2,950.11/x
  3. Step 3: Cross multiply
    8,572.67x = 12,860.43 × 2,950.11
  4. Step 4: Simplify right side
    8,572.67x = 37,939,683.15
  5. Step 5: Solve for x
    x = 37,939,683.15/8,572.67
  6. Step 6: Final answer
    x = 4,425.66

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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.