Home / 3,913.20-5,402.30-2,660.94

Finding the Fourth Proportional to 3,913.20, 5,402.30 and 2,660.94

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Solution

The fourth proportional to 3,913.20, 5,402.30 and 2,660.94 is: 3,673.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.20 : 5,402.30 = 2,660.94 : x
  2. Step 2: Convert to fraction form
    3,913.20/5,402.30 = 2,660.94/x
  3. Step 3: Cross multiply
    3,913.20x = 5,402.30 × 2,660.94
  4. Step 4: Simplify right side
    3,913.20x = 14,375,182.86
  5. Step 5: Solve for x
    x = 14,375,182.86/3,913.20
  6. Step 6: Final answer
    x = 3,673.51

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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.