Home / 2,450.79-3,378.15-1,918.76

Finding the Fourth Proportional to 2,450.79, 3,378.15 and 1,918.76

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Solution

The fourth proportional to 2,450.79, 3,378.15 and 1,918.76 is: 2,644.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,450.79 : 3,378.15 = 1,918.76 : x
  2. Step 2: Convert to fraction form
    2,450.79/3,378.15 = 1,918.76/x
  3. Step 3: Cross multiply
    2,450.79x = 3,378.15 × 1,918.76
  4. Step 4: Simplify right side
    2,450.79x = 6,481,842.20
  5. Step 5: Solve for x
    x = 6,481,842.20/2,450.79
  6. Step 6: Final answer
    x = 2,644.80

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Double scale
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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.