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Finding the Fourth Proportional to 6,331.80, 9,503.79 and 5,408.40

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Solution

The fourth proportional to 6,331.80, 9,503.79 and 5,408.40 is: 8,117.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,331.80 : 9,503.79 = 5,408.40 : x
  2. Step 2: Convert to fraction form
    6,331.80/9,503.79 = 5,408.40/x
  3. Step 3: Cross multiply
    6,331.80x = 9,503.79 × 5,408.40
  4. Step 4: Simplify right side
    6,331.80x = 51,400,297.84
  5. Step 5: Solve for x
    x = 51,400,297.84/6,331.80
  6. Step 6: Final answer
    x = 8,117.80

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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.