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Finding the Fourth Proportional to 2,767.79, 4,150.13 and 918.41

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Solution

The fourth proportional to 2,767.79, 4,150.13 and 918.41 is: 1,377.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,767.79 : 4,150.13 = 918.41 : x
  2. Step 2: Convert to fraction form
    2,767.79/4,150.13 = 918.41/x
  3. Step 3: Cross multiply
    2,767.79x = 4,150.13 × 918.41
  4. Step 4: Simplify right side
    2,767.79x = 3,811,495.55
  5. Step 5: Solve for x
    x = 3,811,495.55/2,767.79
  6. Step 6: Final answer
    x = 1,377.09

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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.