Home / 2,782.04-4,176.30-1,812.20

Finding the Fourth Proportional to 2,782.04, 4,176.30 and 1,812.20

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Solution

The fourth proportional to 2,782.04, 4,176.30 and 1,812.20 is: 2,720.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.04 : 4,176.30 = 1,812.20 : x
  2. Step 2: Convert to fraction form
    2,782.04/4,176.30 = 1,812.20/x
  3. Step 3: Cross multiply
    2,782.04x = 4,176.30 × 1,812.20
  4. Step 4: Simplify right side
    2,782.04x = 7,568,290.86
  5. Step 5: Solve for x
    x = 7,568,290.86/2,782.04
  6. Step 6: Final answer
    x = 2,720.41

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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.