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Finding the Fourth Proportional to 8,603.99, 12,902.20 and 4,446.35

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Solution

The fourth proportional to 8,603.99, 12,902.20 and 4,446.35 is: 6,667.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.99 : 12,902.20 = 4,446.35 : x
  2. Step 2: Convert to fraction form
    8,603.99/12,902.20 = 4,446.35/x
  3. Step 3: Cross multiply
    8,603.99x = 12,902.20 × 4,446.35
  4. Step 4: Simplify right side
    8,603.99x = 57,367,696.97
  5. Step 5: Solve for x
    x = 57,367,696.97/8,603.99
  6. Step 6: Final answer
    x = 6,667.57

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1.5x scale

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.