Home / 8,515.81-11,751.90-4,738.78

Finding the Fourth Proportional to 8,515.81, 11,751.90 and 4,738.78

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Solution

The fourth proportional to 8,515.81, 11,751.90 and 4,738.78 is: 6,539.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.81 : 11,751.90 = 4,738.78 : x
  2. Step 2: Convert to fraction form
    8,515.81/11,751.90 = 4,738.78/x
  3. Step 3: Cross multiply
    8,515.81x = 11,751.90 × 4,738.78
  4. Step 4: Simplify right side
    8,515.81x = 55,689,609.92
  5. Step 5: Solve for x
    x = 55,689,609.92/8,515.81
  6. Step 6: Final answer
    x = 6,539.56

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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.