Home / 3,908.60-5,393.77-2,140.28

Finding the Fourth Proportional to 3,908.60, 5,393.77 and 2,140.28

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Solution

The fourth proportional to 3,908.60, 5,393.77 and 2,140.28 is: 2,953.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.60 : 5,393.77 = 2,140.28 : x
  2. Step 2: Convert to fraction form
    3,908.60/5,393.77 = 2,140.28/x
  3. Step 3: Cross multiply
    3,908.60x = 5,393.77 × 2,140.28
  4. Step 4: Simplify right side
    3,908.60x = 11,544,145.74
  5. Step 5: Solve for x
    x = 11,544,145.74/3,908.60
  6. Step 6: Final answer
    x = 2,953.53

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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.