Home / 8,720.42-13,080.33-3,790.06

Finding the Fourth Proportional to 8,720.42, 13,080.33 and 3,790.06

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Solution

The fourth proportional to 8,720.42, 13,080.33 and 3,790.06 is: 5,684.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.42 : 13,080.33 = 3,790.06 : x
  2. Step 2: Convert to fraction form
    8,720.42/13,080.33 = 3,790.06/x
  3. Step 3: Cross multiply
    8,720.42x = 13,080.33 × 3,790.06
  4. Step 4: Simplify right side
    8,720.42x = 49,575,208.15
  5. Step 5: Solve for x
    x = 49,575,208.15/8,720.42
  6. Step 6: Final answer
    x = 5,684.96

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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.