Home / 3,907.56-5,392.49-2,139.13

Finding the Fourth Proportional to 3,907.56, 5,392.49 and 2,139.13

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Solution

The fourth proportional to 3,907.56, 5,392.49 and 2,139.13 is: 2,952.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.56 : 5,392.49 = 2,139.13 : x
  2. Step 2: Convert to fraction form
    3,907.56/5,392.49 = 2,139.13/x
  3. Step 3: Cross multiply
    3,907.56x = 5,392.49 × 2,139.13
  4. Step 4: Simplify right side
    3,907.56x = 11,535,237.13
  5. Step 5: Solve for x
    x = 11,535,237.13/3,907.56
  6. Step 6: Final answer
    x = 2,952.03

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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.