Home / 6,720.52-10,080.60-1,790.20

Finding the Fourth Proportional to 6,720.52, 10,080.60 and 1,790.20

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Solution

The fourth proportional to 6,720.52, 10,080.60 and 1,790.20 is: 2,685.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.52 : 10,080.60 = 1,790.20 : x
  2. Step 2: Convert to fraction form
    6,720.52/10,080.60 = 1,790.20/x
  3. Step 3: Cross multiply
    6,720.52x = 10,080.60 × 1,790.20
  4. Step 4: Simplify right side
    6,720.52x = 18,046,290.12
  5. Step 5: Solve for x
    x = 18,046,290.12/6,720.52
  6. Step 6: Final answer
    x = 2,685.25

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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.