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Finding the Fourth Proportional to 8,331.98, 12,491.85 and 3,944.30

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Solution

The fourth proportional to 8,331.98, 12,491.85 and 3,944.30 is: 5,913.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,331.98 : 12,491.85 = 3,944.30 : x
  2. Step 2: Convert to fraction form
    8,331.98/12,491.85 = 3,944.30/x
  3. Step 3: Cross multiply
    8,331.98x = 12,491.85 × 3,944.30
  4. Step 4: Simplify right side
    8,331.98x = 49,271,603.96
  5. Step 5: Solve for x
    x = 49,271,603.96/8,331.98
  6. Step 6: Final answer
    x = 5,913.55

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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.