Home / 3,540.60-4,885.74-2,124.60

Finding the Fourth Proportional to 3,540.60, 4,885.74 and 2,124.60

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Solution

The fourth proportional to 3,540.60, 4,885.74 and 2,124.60 is: 2,931.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.60 : 4,885.74 = 2,124.60 : x
  2. Step 2: Convert to fraction form
    3,540.60/4,885.74 = 2,124.60/x
  3. Step 3: Cross multiply
    3,540.60x = 4,885.74 × 2,124.60
  4. Step 4: Simplify right side
    3,540.60x = 10,380,243.20
  5. Step 5: Solve for x
    x = 10,380,243.20/3,540.60
  6. Step 6: Final answer
    x = 2,931.78

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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.