Home / 3,839.52-5,291.52-2,789.76

Finding the Fourth Proportional to 3,839.52, 5,291.52 and 2,789.76

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Solution

The fourth proportional to 3,839.52, 5,291.52 and 2,789.76 is: 3,844.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,839.52 : 5,291.52 = 2,789.76 : x
  2. Step 2: Convert to fraction form
    3,839.52/5,291.52 = 2,789.76/x
  3. Step 3: Cross multiply
    3,839.52x = 5,291.52 × 2,789.76
  4. Step 4: Simplify right side
    3,839.52x = 14,762,070.84
  5. Step 5: Solve for x
    x = 14,762,070.84/3,839.52
  6. Step 6: Final answer
    x = 3,844.77

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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.