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Finding the Fourth Proportional to 1,743.66, 2,615.49 and 769.57

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Solution

The fourth proportional to 1,743.66, 2,615.49 and 769.57 is: 1,154.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,743.66 : 2,615.49 = 769.57 : x
  2. Step 2: Convert to fraction form
    1,743.66/2,615.49 = 769.57/x
  3. Step 3: Cross multiply
    1,743.66x = 2,615.49 × 769.57
  4. Step 4: Simplify right side
    1,743.66x = 2,012,796.10
  5. Step 5: Solve for x
    x = 2,012,796.10/1,743.66
  6. Step 6: Final answer
    x = 1,154.35

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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.