Home / 3,908.58-5,393.84-2,140.18

Finding the Fourth Proportional to 3,908.58, 5,393.84 and 2,140.18

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Solution

The fourth proportional to 3,908.58, 5,393.84 and 2,140.18 is: 2,953.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.58 : 5,393.84 = 2,140.18 : x
  2. Step 2: Convert to fraction form
    3,908.58/5,393.84 = 2,140.18/x
  3. Step 3: Cross multiply
    3,908.58x = 5,393.84 × 2,140.18
  4. Step 4: Simplify right side
    3,908.58x = 11,543,788.49
  5. Step 5: Solve for x
    x = 11,543,788.49/3,908.58
  6. Step 6: Final answer
    x = 2,953.45

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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.