Home / 8,720.35-13,080.47-3,173.67

Finding the Fourth Proportional to 8,720.35, 13,080.47 and 3,173.67

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Solution

The fourth proportional to 8,720.35, 13,080.47 and 3,173.67 is: 4,760.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.35 : 13,080.47 = 3,173.67 : x
  2. Step 2: Convert to fraction form
    8,720.35/13,080.47 = 3,173.67/x
  3. Step 3: Cross multiply
    8,720.35x = 13,080.47 × 3,173.67
  4. Step 4: Simplify right side
    8,720.35x = 41,513,095.22
  5. Step 5: Solve for x
    x = 41,513,095.22/8,720.35
  6. Step 6: Final answer
    x = 4,760.48

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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.