Home / 3,115.05-4,672.79-1,266.15

Finding the Fourth Proportional to 3,115.05, 4,672.79 and 1,266.15

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Solution

The fourth proportional to 3,115.05, 4,672.79 and 1,266.15 is: 1,899.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.05 : 4,672.79 = 1,266.15 : x
  2. Step 2: Convert to fraction form
    3,115.05/4,672.79 = 1,266.15/x
  3. Step 3: Cross multiply
    3,115.05x = 4,672.79 × 1,266.15
  4. Step 4: Simplify right side
    3,115.05x = 5,916,446.73
  5. Step 5: Solve for x
    x = 5,916,446.73/3,115.05
  6. Step 6: Final answer
    x = 1,899.31

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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.