Home / 2,715.39-3,747.33-2,126.79

Finding the Fourth Proportional to 2,715.39, 3,747.33 and 2,126.79

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Solution

The fourth proportional to 2,715.39, 3,747.33 and 2,126.79 is: 2,935.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.39 : 3,747.33 = 2,126.79 : x
  2. Step 2: Convert to fraction form
    2,715.39/3,747.33 = 2,126.79/x
  3. Step 3: Cross multiply
    2,715.39x = 3,747.33 × 2,126.79
  4. Step 4: Simplify right side
    2,715.39x = 7,969,783.97
  5. Step 5: Solve for x
    x = 7,969,783.97/2,715.39
  6. Step 6: Final answer
    x = 2,935.04

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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.