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Finding the Fourth Proportional to 1,682.46, 2,321.44 and 974.26

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Solution

The fourth proportional to 1,682.46, 2,321.44 and 974.26 is: 1,344.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,682.46 : 2,321.44 = 974.26 : x
  2. Step 2: Convert to fraction form
    1,682.46/2,321.44 = 974.26/x
  3. Step 3: Cross multiply
    1,682.46x = 2,321.44 × 974.26
  4. Step 4: Simplify right side
    1,682.46x = 2,261,689.34
  5. Step 5: Solve for x
    x = 2,261,689.34/1,682.46
  6. Step 6: Final answer
    x = 1,344.28

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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.