Home / 8,611.38-11,871.43-6,338.72

Finding the Fourth Proportional to 8,611.38, 11,871.43 and 6,338.72

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Solution

The fourth proportional to 8,611.38, 11,871.43 and 6,338.72 is: 8,738.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.38 : 11,871.43 = 6,338.72 : x
  2. Step 2: Convert to fraction form
    8,611.38/11,871.43 = 6,338.72/x
  3. Step 3: Cross multiply
    8,611.38x = 11,871.43 × 6,338.72
  4. Step 4: Simplify right side
    8,611.38x = 75,249,684.60
  5. Step 5: Solve for x
    x = 75,249,684.60/8,611.38
  6. Step 6: Final answer
    x = 8,738.40

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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.