Home / 3,431.76-4,735.79-2,015.20

Finding the Fourth Proportional to 3,431.76, 4,735.79 and 2,015.20

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Solution

The fourth proportional to 3,431.76, 4,735.79 and 2,015.20 is: 2,780.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.76 : 4,735.79 = 2,015.20 : x
  2. Step 2: Convert to fraction form
    3,431.76/4,735.79 = 2,015.20/x
  3. Step 3: Cross multiply
    3,431.76x = 4,735.79 × 2,015.20
  4. Step 4: Simplify right side
    3,431.76x = 9,543,564.01
  5. Step 5: Solve for x
    x = 9,543,564.01/3,431.76
  6. Step 6: Final answer
    x = 2,780.95

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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.