Home / 3,907.25-5,392.06-2,139.02

Finding the Fourth Proportional to 3,907.25, 5,392.06 and 2,139.02

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Solution

The fourth proportional to 3,907.25, 5,392.06 and 2,139.02 is: 2,951.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.25 : 5,392.06 = 2,139.02 : x
  2. Step 2: Convert to fraction form
    3,907.25/5,392.06 = 2,139.02/x
  3. Step 3: Cross multiply
    3,907.25x = 5,392.06 × 2,139.02
  4. Step 4: Simplify right side
    3,907.25x = 11,533,691.87
  5. Step 5: Solve for x
    x = 11,533,691.87/3,907.25
  6. Step 6: Final answer
    x = 2,951.87

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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.