Home / 3,119.43-4,313.04-2,981.73

Finding the Fourth Proportional to 3,119.43, 4,313.04 and 2,981.73

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Solution

The fourth proportional to 3,119.43, 4,313.04 and 2,981.73 is: 4,122.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.43 : 4,313.04 = 2,981.73 : x
  2. Step 2: Convert to fraction form
    3,119.43/4,313.04 = 2,981.73/x
  3. Step 3: Cross multiply
    3,119.43x = 4,313.04 × 2,981.73
  4. Step 4: Simplify right side
    3,119.43x = 12,860,320.76
  5. Step 5: Solve for x
    x = 12,860,320.76/3,119.43
  6. Step 6: Final answer
    x = 4,122.65

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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.