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Finding the Fourth Proportional to 2,083.92, 3,121.44 and 930.48

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Solution

The fourth proportional to 2,083.92, 3,121.44 and 930.48 is: 1,393.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,083.92 : 3,121.44 = 930.48 : x
  2. Step 2: Convert to fraction form
    2,083.92/3,121.44 = 930.48/x
  3. Step 3: Cross multiply
    2,083.92x = 3,121.44 × 930.48
  4. Step 4: Simplify right side
    2,083.92x = 2,904,437.49
  5. Step 5: Solve for x
    x = 2,904,437.49/2,083.92
  6. Step 6: Final answer
    x = 1,393.74

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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.