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Finding the Fourth Proportional to 8,603.11, 12,894.29 and 4,440.85

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Solution

The fourth proportional to 8,603.11, 12,894.29 and 4,440.85 is: 6,655.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.11 : 12,894.29 = 4,440.85 : x
  2. Step 2: Convert to fraction form
    8,603.11/12,894.29 = 4,440.85/x
  3. Step 3: Cross multiply
    8,603.11x = 12,894.29 × 4,440.85
  4. Step 4: Simplify right side
    8,603.11x = 57,261,578.80
  5. Step 5: Solve for x
    x = 57,261,578.80/8,603.11
  6. Step 6: Final answer
    x = 6,655.92

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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.