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Finding the Fourth Proportional to 1,821.46, 2,730.91 and 930.26

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Solution

The fourth proportional to 1,821.46, 2,730.91 and 930.26 is: 1,394.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.46 : 2,730.91 = 930.26 : x
  2. Step 2: Convert to fraction form
    1,821.46/2,730.91 = 930.26/x
  3. Step 3: Cross multiply
    1,821.46x = 2,730.91 × 930.26
  4. Step 4: Simplify right side
    1,821.46x = 2,540,442.68
  5. Step 5: Solve for x
    x = 2,540,442.68/1,821.46
  6. Step 6: Final answer
    x = 1,394.73

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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.