Home / 2,785.17-4,171.83-2,090.79

Finding the Fourth Proportional to 2,785.17, 4,171.83 and 2,090.79

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Solution

The fourth proportional to 2,785.17, 4,171.83 and 2,090.79 is: 3,131.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.17 : 4,171.83 = 2,090.79 : x
  2. Step 2: Convert to fraction form
    2,785.17/4,171.83 = 2,090.79/x
  3. Step 3: Cross multiply
    2,785.17x = 4,171.83 × 2,090.79
  4. Step 4: Simplify right side
    2,785.17x = 8,722,420.45
  5. Step 5: Solve for x
    x = 8,722,420.45/2,785.17
  6. Step 6: Final answer
    x = 3,131.74

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1.5x scale

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.