Home / 3,907.68-5,392.60-2,139.29

Finding the Fourth Proportional to 3,907.68, 5,392.60 and 2,139.29

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Solution

The fourth proportional to 3,907.68, 5,392.60 and 2,139.29 is: 2,952.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.68 : 5,392.60 = 2,139.29 : x
  2. Step 2: Convert to fraction form
    3,907.68/5,392.60 = 2,139.29/x
  3. Step 3: Cross multiply
    3,907.68x = 5,392.60 × 2,139.29
  4. Step 4: Simplify right side
    3,907.68x = 11,536,354.08
  5. Step 5: Solve for x
    x = 11,536,354.08/3,907.68
  6. Step 6: Final answer
    x = 2,952.23

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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.