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Finding the Fourth Proportional to 2,321, 3,203.70 and 1,493

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Solution

The fourth proportional to 2,321, 3,203.70 and 1,493 is: 2,060.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,321 : 3,203.70 = 1,493 : x
  2. Step 2: Convert to fraction form
    2,321/3,203.70 = 1,493/x
  3. Step 3: Cross multiply
    2,321x = 3,203.70 × 1,493
  4. Step 4: Simplify right side
    2,321x = 4,783,124.10
  5. Step 5: Solve for x
    x = 4,783,124.10/2,321
  6. Step 6: Final answer
    x = 2,060.80

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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.