Home / 3,159.21-4,358.83-2,040.20

Finding the Fourth Proportional to 3,159.21, 4,358.83 and 2,040.20

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Solution

The fourth proportional to 3,159.21, 4,358.83 and 2,040.20 is: 2,814.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.21 : 4,358.83 = 2,040.20 : x
  2. Step 2: Convert to fraction form
    3,159.21/4,358.83 = 2,040.20/x
  3. Step 3: Cross multiply
    3,159.21x = 4,358.83 × 2,040.20
  4. Step 4: Simplify right side
    3,159.21x = 8,892,884.97
  5. Step 5: Solve for x
    x = 8,892,884.97/3,159.21
  6. Step 6: Final answer
    x = 2,814.91

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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.