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Finding the Fourth Proportional to 1,837.73, 2,756.71 and 521.39

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Solution

The fourth proportional to 1,837.73, 2,756.71 and 521.39 is: 782.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,837.73 : 2,756.71 = 521.39 : x
  2. Step 2: Convert to fraction form
    1,837.73/2,756.71 = 521.39/x
  3. Step 3: Cross multiply
    1,837.73x = 2,756.71 × 521.39
  4. Step 4: Simplify right side
    1,837.73x = 1,437,304.64
  5. Step 5: Solve for x
    x = 1,437,304.64/1,837.73
  6. Step 6: Final answer
    x = 782.11

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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.