Home / 5,311.20-7,969.52-2,193.60

Finding the Fourth Proportional to 5,311.20, 7,969.52 and 2,193.60

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Solution

The fourth proportional to 5,311.20, 7,969.52 and 2,193.60 is: 3,291.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.20 : 7,969.52 = 2,193.60 : x
  2. Step 2: Convert to fraction form
    5,311.20/7,969.52 = 2,193.60/x
  3. Step 3: Cross multiply
    5,311.20x = 7,969.52 × 2,193.60
  4. Step 4: Simplify right side
    5,311.20x = 17,481,939.07
  5. Step 5: Solve for x
    x = 17,481,939.07/5,311.20
  6. Step 6: Final answer
    x = 3,291.52

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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.