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Finding the Fourth Proportional to 1,749.77, 2,414.21 and 993.55

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Solution

The fourth proportional to 1,749.77, 2,414.21 and 993.55 is: 1,370.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,749.77 : 2,414.21 = 993.55 : x
  2. Step 2: Convert to fraction form
    1,749.77/2,414.21 = 993.55/x
  3. Step 3: Cross multiply
    1,749.77x = 2,414.21 × 993.55
  4. Step 4: Simplify right side
    1,749.77x = 2,398,626.27
  5. Step 5: Solve for x
    x = 2,398,626.27/1,749.77
  6. Step 6: Final answer
    x = 1,370.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.