Home / 6,515.68-8,991.52-3,720.96

Finding the Fourth Proportional to 6,515.68, 8,991.52 and 3,720.96

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Solution

The fourth proportional to 6,515.68, 8,991.52 and 3,720.96 is: 5,134.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.68 : 8,991.52 = 3,720.96 : x
  2. Step 2: Convert to fraction form
    6,515.68/8,991.52 = 3,720.96/x
  3. Step 3: Cross multiply
    6,515.68x = 8,991.52 × 3,720.96
  4. Step 4: Simplify right side
    6,515.68x = 33,457,086.26
  5. Step 5: Solve for x
    x = 33,457,086.26/6,515.68
  6. Step 6: Final answer
    x = 5,134.86

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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.