Home / 8,619.21-12,932.76-5,116.16

Finding the Fourth Proportional to 8,619.21, 12,932.76 and 5,116.16

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Solution

The fourth proportional to 8,619.21, 12,932.76 and 5,116.16 is: 7,676.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.21 : 12,932.76 = 5,116.16 : x
  2. Step 2: Convert to fraction form
    8,619.21/12,932.76 = 5,116.16/x
  3. Step 3: Cross multiply
    8,619.21x = 12,932.76 × 5,116.16
  4. Step 4: Simplify right side
    8,619.21x = 66,166,120.92
  5. Step 5: Solve for x
    x = 66,166,120.92/8,619.21
  6. Step 6: Final answer
    x = 7,676.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.