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Finding the Fourth Proportional to 2,070.97, 3,106.49 and 609.79

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Solution

The fourth proportional to 2,070.97, 3,106.49 and 609.79 is: 914.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.97 : 3,106.49 = 609.79 : x
  2. Step 2: Convert to fraction form
    2,070.97/3,106.49 = 609.79/x
  3. Step 3: Cross multiply
    2,070.97x = 3,106.49 × 609.79
  4. Step 4: Simplify right side
    2,070.97x = 1,894,306.54
  5. Step 5: Solve for x
    x = 1,894,306.54/2,070.97
  6. Step 6: Final answer
    x = 914.70

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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.