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Finding the Fourth Proportional to 8,603.38, 12,905.07 and 2,447.38

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Solution

The fourth proportional to 8,603.38, 12,905.07 and 2,447.38 is: 3,671.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.38 : 12,905.07 = 2,447.38 : x
  2. Step 2: Convert to fraction form
    8,603.38/12,905.07 = 2,447.38/x
  3. Step 3: Cross multiply
    8,603.38x = 12,905.07 × 2,447.38
  4. Step 4: Simplify right side
    8,603.38x = 31,583,533.45
  5. Step 5: Solve for x
    x = 31,583,533.45/8,603.38
  6. Step 6: Final answer
    x = 3,671.06

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Similar ratio
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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.