Home / 8,720.95-13,081.13-3,790.59

Finding the Fourth Proportional to 8,720.95, 13,081.13 and 3,790.59

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Solution

The fourth proportional to 8,720.95, 13,081.13 and 3,790.59 is: 5,685.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.95 : 13,081.13 = 3,790.59 : x
  2. Step 2: Convert to fraction form
    8,720.95/13,081.13 = 3,790.59/x
  3. Step 3: Cross multiply
    8,720.95x = 13,081.13 × 3,790.59
  4. Step 4: Simplify right side
    8,720.95x = 49,585,200.57
  5. Step 5: Solve for x
    x = 49,585,200.57/8,720.95
  6. Step 6: Final answer
    x = 5,685.76

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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.