Home / 3,120.85-4,301.67-2,071.09

Finding the Fourth Proportional to 3,120.85, 4,301.67 and 2,071.09

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Solution

The fourth proportional to 3,120.85, 4,301.67 and 2,071.09 is: 2,854.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.85 : 4,301.67 = 2,071.09 : x
  2. Step 2: Convert to fraction form
    3,120.85/4,301.67 = 2,071.09/x
  3. Step 3: Cross multiply
    3,120.85x = 4,301.67 × 2,071.09
  4. Step 4: Simplify right side
    3,120.85x = 8,909,145.72
  5. Step 5: Solve for x
    x = 8,909,145.72/3,120.85
  6. Step 6: Final answer
    x = 2,854.72

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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.