Home / 3,540.21-4,885.10-2,123.95

Finding the Fourth Proportional to 3,540.21, 4,885.10 and 2,123.95

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Solution

The fourth proportional to 3,540.21, 4,885.10 and 2,123.95 is: 2,930.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.21 : 4,885.10 = 2,123.95 : x
  2. Step 2: Convert to fraction form
    3,540.21/4,885.10 = 2,123.95/x
  3. Step 3: Cross multiply
    3,540.21x = 4,885.10 × 2,123.95
  4. Step 4: Simplify right side
    3,540.21x = 10,375,708.15
  5. Step 5: Solve for x
    x = 10,375,708.15/3,540.21
  6. Step 6: Final answer
    x = 2,930.82

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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.