Home / 3,917.79-5,407.50-2,660.94

Finding the Fourth Proportional to 3,917.79, 5,407.50 and 2,660.94

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Solution

The fourth proportional to 3,917.79, 5,407.50 and 2,660.94 is: 3,672.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.79 : 5,407.50 = 2,660.94 : x
  2. Step 2: Convert to fraction form
    3,917.79/5,407.50 = 2,660.94/x
  3. Step 3: Cross multiply
    3,917.79x = 5,407.50 × 2,660.94
  4. Step 4: Simplify right side
    3,917.79x = 14,389,033.05
  5. Step 5: Solve for x
    x = 14,389,033.05/3,917.79
  6. Step 6: Final answer
    x = 3,672.74

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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.