Home / 3,609.05-4,980.72-2,015.70

Finding the Fourth Proportional to 3,609.05, 4,980.72 and 2,015.70

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Solution

The fourth proportional to 3,609.05, 4,980.72 and 2,015.70 is: 2,781.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.05 : 4,980.72 = 2,015.70 : x
  2. Step 2: Convert to fraction form
    3,609.05/4,980.72 = 2,015.70/x
  3. Step 3: Cross multiply
    3,609.05x = 4,980.72 × 2,015.70
  4. Step 4: Simplify right side
    3,609.05x = 10,039,627.23
  5. Step 5: Solve for x
    x = 10,039,627.23/3,609.05
  6. Step 6: Final answer
    x = 2,781.79

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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.