Home / 3,725.40-5,139.84-2,152.56

Finding the Fourth Proportional to 3,725.40, 5,139.84 and 2,152.56

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Solution

The fourth proportional to 3,725.40, 5,139.84 and 2,152.56 is: 2,969.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,725.40 : 5,139.84 = 2,152.56 : x
  2. Step 2: Convert to fraction form
    3,725.40/5,139.84 = 2,152.56/x
  3. Step 3: Cross multiply
    3,725.40x = 5,139.84 × 2,152.56
  4. Step 4: Simplify right side
    3,725.40x = 11,063,813.99
  5. Step 5: Solve for x
    x = 11,063,813.99/3,725.40
  6. Step 6: Final answer
    x = 2,969.83

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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.