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Finding the Fourth Proportional to 1,743.85, 2,406.30 and 997.84

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Solution

The fourth proportional to 1,743.85, 2,406.30 and 997.84 is: 1,376.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,743.85 : 2,406.30 = 997.84 : x
  2. Step 2: Convert to fraction form
    1,743.85/2,406.30 = 997.84/x
  3. Step 3: Cross multiply
    1,743.85x = 2,406.30 × 997.84
  4. Step 4: Simplify right side
    1,743.85x = 2,401,102.39
  5. Step 5: Solve for x
    x = 2,401,102.39/1,743.85
  6. Step 6: Final answer
    x = 1,376.90

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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.