Home / 3,105.48-4,280.58-2,851.14

Finding the Fourth Proportional to 3,105.48, 4,280.58 and 2,851.14

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Solution

The fourth proportional to 3,105.48, 4,280.58 and 2,851.14 is: 3,930.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.48 : 4,280.58 = 2,851.14 : x
  2. Step 2: Convert to fraction form
    3,105.48/4,280.58 = 2,851.14/x
  3. Step 3: Cross multiply
    3,105.48x = 4,280.58 × 2,851.14
  4. Step 4: Simplify right side
    3,105.48x = 12,204,532.86
  5. Step 5: Solve for x
    x = 12,204,532.86/3,105.48
  6. Step 6: Final answer
    x = 3,930.00

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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.