Home / 2,623.79-3,938.12-1,326.17

Finding the Fourth Proportional to 2,623.79, 3,938.12 and 1,326.17

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Solution

The fourth proportional to 2,623.79, 3,938.12 and 1,326.17 is: 1,990.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,623.79 : 3,938.12 = 1,326.17 : x
  2. Step 2: Convert to fraction form
    2,623.79/3,938.12 = 1,326.17/x
  3. Step 3: Cross multiply
    2,623.79x = 3,938.12 × 1,326.17
  4. Step 4: Simplify right side
    2,623.79x = 5,222,609.97
  5. Step 5: Solve for x
    x = 5,222,609.97/2,623.79
  6. Step 6: Final answer
    x = 1,990.48

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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.