Home / 6,811.80-9,400.28-3,827.76

Finding the Fourth Proportional to 6,811.80, 9,400.28 and 3,827.76

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Solution

The fourth proportional to 6,811.80, 9,400.28 and 3,827.76 is: 5,282.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,811.80 : 9,400.28 = 3,827.76 : x
  2. Step 2: Convert to fraction form
    6,811.80/9,400.28 = 3,827.76/x
  3. Step 3: Cross multiply
    6,811.80x = 9,400.28 × 3,827.76
  4. Step 4: Simplify right side
    6,811.80x = 35,982,015.77
  5. Step 5: Solve for x
    x = 35,982,015.77/6,811.80
  6. Step 6: Final answer
    x = 5,282.31

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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.