Home / 3,908.39-5,393.58-2,140.01

Finding the Fourth Proportional to 3,908.39, 5,393.58 and 2,140.01

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Solution

The fourth proportional to 3,908.39, 5,393.58 and 2,140.01 is: 2,953.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.39 : 5,393.58 = 2,140.01 : x
  2. Step 2: Convert to fraction form
    3,908.39/5,393.58 = 2,140.01/x
  3. Step 3: Cross multiply
    3,908.39x = 5,393.58 × 2,140.01
  4. Step 4: Simplify right side
    3,908.39x = 11,542,315.14
  5. Step 5: Solve for x
    x = 11,542,315.14/3,908.39
  6. Step 6: Final answer
    x = 2,953.21

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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.