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Finding the Fourth Proportional to 5,939.20, 8,901.60 and 2,648.80

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Solution

The fourth proportional to 5,939.20, 8,901.60 and 2,648.80 is: 3,969.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,939.20 : 8,901.60 = 2,648.80 : x
  2. Step 2: Convert to fraction form
    5,939.20/8,901.60 = 2,648.80/x
  3. Step 3: Cross multiply
    5,939.20x = 8,901.60 × 2,648.80
  4. Step 4: Simplify right side
    5,939.20x = 23,578,558.08
  5. Step 5: Solve for x
    x = 23,578,558.08/5,939.20
  6. Step 6: Final answer
    x = 3,969.99

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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.