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Finding the Fourth Proportional to 1,841.34, 2,761.09 and 917.41

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Solution

The fourth proportional to 1,841.34, 2,761.09 and 917.41 is: 1,375.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,841.34 : 2,761.09 = 917.41 : x
  2. Step 2: Convert to fraction form
    1,841.34/2,761.09 = 917.41/x
  3. Step 3: Cross multiply
    1,841.34x = 2,761.09 × 917.41
  4. Step 4: Simplify right side
    1,841.34x = 2,533,041.73
  5. Step 5: Solve for x
    x = 2,533,041.73/1,841.34
  6. Step 6: Final answer
    x = 1,375.65

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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.