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Finding the Fourth Proportional to 1,839.97, 2,760.67 and 916.22

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Solution

The fourth proportional to 1,839.97, 2,760.67 and 916.22 is: 1,374.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,839.97 : 2,760.67 = 916.22 : x
  2. Step 2: Convert to fraction form
    1,839.97/2,760.67 = 916.22/x
  3. Step 3: Cross multiply
    1,839.97x = 2,760.67 × 916.22
  4. Step 4: Simplify right side
    1,839.97x = 2,529,368.43
  5. Step 5: Solve for x
    x = 2,529,368.43/1,839.97
  6. Step 6: Final answer
    x = 1,374.68

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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.