Home / 4,138.30-5,705.26-2,809.70

Finding the Fourth Proportional to 4,138.30, 5,705.26 and 2,809.70

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Solution

The fourth proportional to 4,138.30, 5,705.26 and 2,809.70 is: 3,873.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.30 : 5,705.26 = 2,809.70 : x
  2. Step 2: Convert to fraction form
    4,138.30/5,705.26 = 2,809.70/x
  3. Step 3: Cross multiply
    4,138.30x = 5,705.26 × 2,809.70
  4. Step 4: Simplify right side
    4,138.30x = 16,030,065.30
  5. Step 5: Solve for x
    x = 16,030,065.30/4,138.30
  6. Step 6: Final answer
    x = 3,873.59

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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.