Home / 3,929.83-5,423.39-2,251.44

Finding the Fourth Proportional to 3,929.83, 5,423.39 and 2,251.44

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Solution

The fourth proportional to 3,929.83, 5,423.39 and 2,251.44 is: 3,107.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.83 : 5,423.39 = 2,251.44 : x
  2. Step 2: Convert to fraction form
    3,929.83/5,423.39 = 2,251.44/x
  3. Step 3: Cross multiply
    3,929.83x = 5,423.39 × 2,251.44
  4. Step 4: Simplify right side
    3,929.83x = 12,210,437.18
  5. Step 5: Solve for x
    x = 12,210,437.18/3,929.83
  6. Step 6: Final answer
    x = 3,107.12

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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.