Home / 2,720.04-4,078.80-845.70

Finding the Fourth Proportional to 2,720.04, 4,078.80 and 845.70

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Solution

The fourth proportional to 2,720.04, 4,078.80 and 845.70 is: 1,268.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.04 : 4,078.80 = 845.70 : x
  2. Step 2: Convert to fraction form
    2,720.04/4,078.80 = 845.70/x
  3. Step 3: Cross multiply
    2,720.04x = 4,078.80 × 845.70
  4. Step 4: Simplify right side
    2,720.04x = 3,449,441.16
  5. Step 5: Solve for x
    x = 3,449,441.16/2,720.04
  6. Step 6: Final answer
    x = 1,268.16

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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.