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Finding the Fourth Proportional to 1,905.73, 2,859.81 and 810.41

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Solution

The fourth proportional to 1,905.73, 2,859.81 and 810.41 is: 1,216.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.73 : 2,859.81 = 810.41 : x
  2. Step 2: Convert to fraction form
    1,905.73/2,859.81 = 810.41/x
  3. Step 3: Cross multiply
    1,905.73x = 2,859.81 × 810.41
  4. Step 4: Simplify right side
    1,905.73x = 2,317,601.28
  5. Step 5: Solve for x
    x = 2,317,601.28/1,905.73
  6. Step 6: Final answer
    x = 1,216.12

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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.