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Finding the Fourth Proportional to 1,751.96, 2,628.18 and 641.23

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Solution

The fourth proportional to 1,751.96, 2,628.18 and 641.23 is: 961.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,751.96 : 2,628.18 = 641.23 : x
  2. Step 2: Convert to fraction form
    1,751.96/2,628.18 = 641.23/x
  3. Step 3: Cross multiply
    1,751.96x = 2,628.18 × 641.23
  4. Step 4: Simplify right side
    1,751.96x = 1,685,278.78
  5. Step 5: Solve for x
    x = 1,685,278.78/1,751.96
  6. Step 6: Final answer
    x = 961.94

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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.