Home / 3,180.17-4,768.63-1,330.78

Finding the Fourth Proportional to 3,180.17, 4,768.63 and 1,330.78

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Solution

The fourth proportional to 3,180.17, 4,768.63 and 1,330.78 is: 1,995.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.17 : 4,768.63 = 1,330.78 : x
  2. Step 2: Convert to fraction form
    3,180.17/4,768.63 = 1,330.78/x
  3. Step 3: Cross multiply
    3,180.17x = 4,768.63 × 1,330.78
  4. Step 4: Simplify right side
    3,180.17x = 6,345,997.43
  5. Step 5: Solve for x
    x = 6,345,997.43/3,180.17
  6. Step 6: Final answer
    x = 1,995.49

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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.