Home / 6,911.28-9,534.86-3,885.71

Finding the Fourth Proportional to 6,911.28, 9,534.86 and 3,885.71

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Solution

The fourth proportional to 6,911.28, 9,534.86 and 3,885.71 is: 5,360.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,911.28 : 9,534.86 = 3,885.71 : x
  2. Step 2: Convert to fraction form
    6,911.28/9,534.86 = 3,885.71/x
  3. Step 3: Cross multiply
    6,911.28x = 9,534.86 × 3,885.71
  4. Step 4: Simplify right side
    6,911.28x = 37,049,633.75
  5. Step 5: Solve for x
    x = 37,049,633.75/6,911.28
  6. Step 6: Final answer
    x = 5,360.75

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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.