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Finding the Fourth Proportional to 2,072.08, 3,107.76 and 611.08

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Solution

The fourth proportional to 2,072.08, 3,107.76 and 611.08 is: 916.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.08 : 3,107.76 = 611.08 : x
  2. Step 2: Convert to fraction form
    2,072.08/3,107.76 = 611.08/x
  3. Step 3: Cross multiply
    2,072.08x = 3,107.76 × 611.08
  4. Step 4: Simplify right side
    2,072.08x = 1,899,089.98
  5. Step 5: Solve for x
    x = 1,899,089.98/2,072.08
  6. Step 6: Final answer
    x = 916.51

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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.