Home / 3,929.70-5,423.10-2,250.96

Finding the Fourth Proportional to 3,929.70, 5,423.10 and 2,250.96

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Solution

The fourth proportional to 3,929.70, 5,423.10 and 2,250.96 is: 3,106.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.70 : 5,423.10 = 2,250.96 : x
  2. Step 2: Convert to fraction form
    3,929.70/5,423.10 = 2,250.96/x
  3. Step 3: Cross multiply
    3,929.70x = 5,423.10 × 2,250.96
  4. Step 4: Simplify right side
    3,929.70x = 12,207,181.18
  5. Step 5: Solve for x
    x = 12,207,181.18/3,929.70
  6. Step 6: Final answer
    x = 3,106.39

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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.