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Finding the Fourth Proportional to 2,073.70, 3,109.57 and 756.54

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Solution

The fourth proportional to 2,073.70, 3,109.57 and 756.54 is: 1,134.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,073.70 : 3,109.57 = 756.54 : x
  2. Step 2: Convert to fraction form
    2,073.70/3,109.57 = 756.54/x
  3. Step 3: Cross multiply
    2,073.70x = 3,109.57 × 756.54
  4. Step 4: Simplify right side
    2,073.70x = 2,352,516.45
  5. Step 5: Solve for x
    x = 2,352,516.45/2,073.70
  6. Step 6: Final answer
    x = 1,134.45

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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.