Home / 8,720.12-13,079.50-2,797.61

Finding the Fourth Proportional to 8,720.12, 13,079.50 and 2,797.61

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Solution

The fourth proportional to 8,720.12, 13,079.50 and 2,797.61 is: 4,196.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.12 : 13,079.50 = 2,797.61 : x
  2. Step 2: Convert to fraction form
    8,720.12/13,079.50 = 2,797.61/x
  3. Step 3: Cross multiply
    8,720.12x = 13,079.50 × 2,797.61
  4. Step 4: Simplify right side
    8,720.12x = 36,591,267.60
  5. Step 5: Solve for x
    x = 36,591,267.60/8,720.12
  6. Step 6: Final answer
    x = 4,196.19

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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.