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Finding the Fourth Proportional to 8,603.58, 12,906.36 and 3,057.45

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Solution

The fourth proportional to 8,603.58, 12,906.36 and 3,057.45 is: 4,586.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.58 : 12,906.36 = 3,057.45 : x
  2. Step 2: Convert to fraction form
    8,603.58/12,906.36 = 3,057.45/x
  3. Step 3: Cross multiply
    8,603.58x = 12,906.36 × 3,057.45
  4. Step 4: Simplify right side
    8,603.58x = 39,460,550.38
  5. Step 5: Solve for x
    x = 39,460,550.38/8,603.58
  6. Step 6: Final answer
    x = 4,586.53

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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.