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Finding the Fourth Proportional to 2,909.70, 4,363.68 and 829.56

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Solution

The fourth proportional to 2,909.70, 4,363.68 and 829.56 is: 1,244.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.70 : 4,363.68 = 829.56 : x
  2. Step 2: Convert to fraction form
    2,909.70/4,363.68 = 829.56/x
  3. Step 3: Cross multiply
    2,909.70x = 4,363.68 × 829.56
  4. Step 4: Simplify right side
    2,909.70x = 3,619,934.38
  5. Step 5: Solve for x
    x = 3,619,934.38/2,909.70
  6. Step 6: Final answer
    x = 1,244.09

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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.