Home / 8,720.20-13,080.21-3,524.86

Finding the Fourth Proportional to 8,720.20, 13,080.21 and 3,524.86

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Solution

The fourth proportional to 8,720.20, 13,080.21 and 3,524.86 is: 5,287.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.20 : 13,080.21 = 3,524.86 : x
  2. Step 2: Convert to fraction form
    8,720.20/13,080.21 = 3,524.86/x
  3. Step 3: Cross multiply
    8,720.20x = 13,080.21 × 3,524.86
  4. Step 4: Simplify right side
    8,720.20x = 46,105,909.02
  5. Step 5: Solve for x
    x = 46,105,909.02/8,720.20
  6. Step 6: Final answer
    x = 5,287.25

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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.