Home / 3,826.56-5,279.76-2,776.80

Finding the Fourth Proportional to 3,826.56, 5,279.76 and 2,776.80

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Solution

The fourth proportional to 3,826.56, 5,279.76 and 2,776.80 is: 3,831.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,826.56 : 5,279.76 = 2,776.80 : x
  2. Step 2: Convert to fraction form
    3,826.56/5,279.76 = 2,776.80/x
  3. Step 3: Cross multiply
    3,826.56x = 5,279.76 × 2,776.80
  4. Step 4: Simplify right side
    3,826.56x = 14,660,837.57
  5. Step 5: Solve for x
    x = 14,660,837.57/3,826.56
  6. Step 6: Final answer
    x = 3,831.34

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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.