Home / 3,838.20-5,296.86-2,159.68

Finding the Fourth Proportional to 3,838.20, 5,296.86 and 2,159.68

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Solution

The fourth proportional to 3,838.20, 5,296.86 and 2,159.68 is: 2,980.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,838.20 : 5,296.86 = 2,159.68 : x
  2. Step 2: Convert to fraction form
    3,838.20/5,296.86 = 2,159.68/x
  3. Step 3: Cross multiply
    3,838.20x = 5,296.86 × 2,159.68
  4. Step 4: Simplify right side
    3,838.20x = 11,439,522.60
  5. Step 5: Solve for x
    x = 11,439,522.60/3,838.20
  6. Step 6: Final answer
    x = 2,980.44

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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.