Home / 2,720.46-4,080.69-1,078.16

Finding the Fourth Proportional to 2,720.46, 4,080.69 and 1,078.16

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Solution

The fourth proportional to 2,720.46, 4,080.69 and 1,078.16 is: 1,617.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.46 : 4,080.69 = 1,078.16 : x
  2. Step 2: Convert to fraction form
    2,720.46/4,080.69 = 1,078.16/x
  3. Step 3: Cross multiply
    2,720.46x = 4,080.69 × 1,078.16
  4. Step 4: Simplify right side
    2,720.46x = 4,399,640.80
  5. Step 5: Solve for x
    x = 4,399,640.80/2,720.46
  6. Step 6: Final answer
    x = 1,617.24

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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.