Home / 2,715.69-4,072.17-1,326.95

Finding the Fourth Proportional to 2,715.69, 4,072.17 and 1,326.95

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Solution

The fourth proportional to 2,715.69, 4,072.17 and 1,326.95 is: 1,989.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.69 : 4,072.17 = 1,326.95 : x
  2. Step 2: Convert to fraction form
    2,715.69/4,072.17 = 1,326.95/x
  3. Step 3: Cross multiply
    2,715.69x = 4,072.17 × 1,326.95
  4. Step 4: Simplify right side
    2,715.69x = 5,403,538.99
  5. Step 5: Solve for x
    x = 5,403,538.99/2,715.69
  6. Step 6: Final answer
    x = 1,989.75

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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.