Home / 3,839.26-5,296.98-2,160.40

Finding the Fourth Proportional to 3,839.26, 5,296.98 and 2,160.40

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Solution

The fourth proportional to 3,839.26, 5,296.98 and 2,160.40 is: 2,980.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.26 : 5,296.98 = 2,160.40 : x
  2. Step 2: Convert to fraction form
    3,839.26/5,296.98 = 2,160.40/x
  3. Step 3: Cross multiply
    3,839.26x = 5,296.98 × 2,160.40
  4. Step 4: Simplify right side
    3,839.26x = 11,443,595.59
  5. Step 5: Solve for x
    x = 11,443,595.59/3,839.26
  6. Step 6: Final answer
    x = 2,980.68

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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.