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Finding the Fourth Proportional to 2,069.49, 3,104.28 and 770.97

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Solution

The fourth proportional to 2,069.49, 3,104.28 and 770.97 is: 1,156.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,069.49 : 3,104.28 = 770.97 : x
  2. Step 2: Convert to fraction form
    2,069.49/3,104.28 = 770.97/x
  3. Step 3: Cross multiply
    2,069.49x = 3,104.28 × 770.97
  4. Step 4: Simplify right side
    2,069.49x = 2,393,306.75
  5. Step 5: Solve for x
    x = 2,393,306.75/2,069.49
  6. Step 6: Final answer
    x = 1,156.47

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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.