Home / 8,515.31-11,751.21-4,738.28

Finding the Fourth Proportional to 8,515.31, 11,751.21 and 4,738.28

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Solution

The fourth proportional to 8,515.31, 11,751.21 and 4,738.28 is: 6,538.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.31 : 11,751.21 = 4,738.28 : x
  2. Step 2: Convert to fraction form
    8,515.31/11,751.21 = 4,738.28/x
  3. Step 3: Cross multiply
    8,515.31x = 11,751.21 × 4,738.28
  4. Step 4: Simplify right side
    8,515.31x = 55,680,464.56
  5. Step 5: Solve for x
    x = 55,680,464.56/8,515.31
  6. Step 6: Final answer
    x = 6,538.87

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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.