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Finding the Fourth Proportional to 6,418.76, 9,628.18 and 1,976.37

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Solution

The fourth proportional to 6,418.76, 9,628.18 and 1,976.37 is: 2,964.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,418.76 : 9,628.18 = 1,976.37 : x
  2. Step 2: Convert to fraction form
    6,418.76/9,628.18 = 1,976.37/x
  3. Step 3: Cross multiply
    6,418.76x = 9,628.18 × 1,976.37
  4. Step 4: Simplify right side
    6,418.76x = 19,028,836.22
  5. Step 5: Solve for x
    x = 19,028,836.22/6,418.76
  6. Step 6: Final answer
    x = 2,964.57

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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.