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Finding the Fourth Proportional to 2,315.05, 3,471.73 and 671.09

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Solution

The fourth proportional to 2,315.05, 3,471.73 and 671.09 is: 1,006.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.05 : 3,471.73 = 671.09 : x
  2. Step 2: Convert to fraction form
    2,315.05/3,471.73 = 671.09/x
  3. Step 3: Cross multiply
    2,315.05x = 3,471.73 × 671.09
  4. Step 4: Simplify right side
    2,315.05x = 2,329,824.25
  5. Step 5: Solve for x
    x = 2,329,824.25/2,315.05
  6. Step 6: Final answer
    x = 1,006.38

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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.