Home / 3,320.64-4,980.96-2,019.60

Finding the Fourth Proportional to 3,320.64, 4,980.96 and 2,019.60

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Solution

The fourth proportional to 3,320.64, 4,980.96 and 2,019.60 is: 3,029.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.64 : 4,980.96 = 2,019.60 : x
  2. Step 2: Convert to fraction form
    3,320.64/4,980.96 = 2,019.60/x
  3. Step 3: Cross multiply
    3,320.64x = 4,980.96 × 2,019.60
  4. Step 4: Simplify right side
    3,320.64x = 10,059,546.82
  5. Step 5: Solve for x
    x = 10,059,546.82/3,320.64
  6. Step 6: Final answer
    x = 3,029.40

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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.