Home / 3,321.79-4,579.05-2,731.30

Finding the Fourth Proportional to 3,321.79, 4,579.05 and 2,731.30

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Solution

The fourth proportional to 3,321.79, 4,579.05 and 2,731.30 is: 3,765.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,321.79 : 4,579.05 = 2,731.30 : x
  2. Step 2: Convert to fraction form
    3,321.79/4,579.05 = 2,731.30/x
  3. Step 3: Cross multiply
    3,321.79x = 4,579.05 × 2,731.30
  4. Step 4: Simplify right side
    3,321.79x = 12,506,736.37
  5. Step 5: Solve for x
    x = 12,506,736.37/3,321.79
  6. Step 6: Final answer
    x = 3,765.06

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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.