Home / 2,954.22-4,078.78-2,280.80

Finding the Fourth Proportional to 2,954.22, 4,078.78 and 2,280.80

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Solution

The fourth proportional to 2,954.22, 4,078.78 and 2,280.80 is: 3,149.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,954.22 : 4,078.78 = 2,280.80 : x
  2. Step 2: Convert to fraction form
    2,954.22/4,078.78 = 2,280.80/x
  3. Step 3: Cross multiply
    2,954.22x = 4,078.78 × 2,280.80
  4. Step 4: Simplify right side
    2,954.22x = 9,302,881.42
  5. Step 5: Solve for x
    x = 9,302,881.42/2,954.22
  6. Step 6: Final answer
    x = 3,149.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.