Home / 4,138.80-5,705.96-2,810.20

Finding the Fourth Proportional to 4,138.80, 5,705.96 and 2,810.20

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Solution

The fourth proportional to 4,138.80, 5,705.96 and 2,810.20 is: 3,874.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.80 : 5,705.96 = 2,810.20 : x
  2. Step 2: Convert to fraction form
    4,138.80/5,705.96 = 2,810.20/x
  3. Step 3: Cross multiply
    4,138.80x = 5,705.96 × 2,810.20
  4. Step 4: Simplify right side
    4,138.80x = 16,034,874.74
  5. Step 5: Solve for x
    x = 16,034,874.74/4,138.80
  6. Step 6: Final answer
    x = 3,874.28

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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.