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Finding the Fourth Proportional to 7,371.60, 11,041.20 and 6,550.80

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Solution

The fourth proportional to 7,371.60, 11,041.20 and 6,550.80 is: 9,811.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,371.60 : 11,041.20 = 6,550.80 : x
  2. Step 2: Convert to fraction form
    7,371.60/11,041.20 = 6,550.80/x
  3. Step 3: Cross multiply
    7,371.60x = 11,041.20 × 6,550.80
  4. Step 4: Simplify right side
    7,371.60x = 72,328,692.96
  5. Step 5: Solve for x
    x = 72,328,692.96/7,371.60
  6. Step 6: Final answer
    x = 9,811.80

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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.