Home / 5,720.09-7,891.38-3,481.60

Finding the Fourth Proportional to 5,720.09, 7,891.38 and 3,481.60

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Solution

The fourth proportional to 5,720.09, 7,891.38 and 3,481.60 is: 4,803.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,720.09 : 7,891.38 = 3,481.60 : x
  2. Step 2: Convert to fraction form
    5,720.09/7,891.38 = 3,481.60/x
  3. Step 3: Cross multiply
    5,720.09x = 7,891.38 × 3,481.60
  4. Step 4: Simplify right side
    5,720.09x = 27,474,628.61
  5. Step 5: Solve for x
    x = 27,474,628.61/5,720.09
  6. Step 6: Final answer
    x = 4,803.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.