Home / 3,540.72-4,885.40-2,143.44

Finding the Fourth Proportional to 3,540.72, 4,885.40 and 2,143.44

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Solution

The fourth proportional to 3,540.72, 4,885.40 and 2,143.44 is: 2,957.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.72 : 4,885.40 = 2,143.44 : x
  2. Step 2: Convert to fraction form
    3,540.72/4,885.40 = 2,143.44/x
  3. Step 3: Cross multiply
    3,540.72x = 4,885.40 × 2,143.44
  4. Step 4: Simplify right side
    3,540.72x = 10,471,561.78
  5. Step 5: Solve for x
    x = 10,471,561.78/3,540.72
  6. Step 6: Final answer
    x = 2,957.47

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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.