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Finding the Fourth Proportional to 1,743.45, 2,613.42 and 769.38

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Solution

The fourth proportional to 1,743.45, 2,613.42 and 769.38 is: 1,153.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,743.45 : 2,613.42 = 769.38 : x
  2. Step 2: Convert to fraction form
    1,743.45/2,613.42 = 769.38/x
  3. Step 3: Cross multiply
    1,743.45x = 2,613.42 × 769.38
  4. Step 4: Simplify right side
    1,743.45x = 2,010,713.08
  5. Step 5: Solve for x
    x = 2,010,713.08/1,743.45
  6. Step 6: Final answer
    x = 1,153.30

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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.