Home / 3,120.07-4,680.04-1,805.80

Finding the Fourth Proportional to 3,120.07, 4,680.04 and 1,805.80

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Solution

The fourth proportional to 3,120.07, 4,680.04 and 1,805.80 is: 2,708.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.07 : 4,680.04 = 1,805.80 : x
  2. Step 2: Convert to fraction form
    3,120.07/4,680.04 = 1,805.80/x
  3. Step 3: Cross multiply
    3,120.07x = 4,680.04 × 1,805.80
  4. Step 4: Simplify right side
    3,120.07x = 8,451,216.23
  5. Step 5: Solve for x
    x = 8,451,216.23/3,120.07
  6. Step 6: Final answer
    x = 2,708.66

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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.