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Finding the Fourth Proportional to 1,710.97, 2,566.73 and 787.44

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Solution

The fourth proportional to 1,710.97, 2,566.73 and 787.44 is: 1,181.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,710.97 : 2,566.73 = 787.44 : x
  2. Step 2: Convert to fraction form
    1,710.97/2,566.73 = 787.44/x
  3. Step 3: Cross multiply
    1,710.97x = 2,566.73 × 787.44
  4. Step 4: Simplify right side
    1,710.97x = 2,021,129.10
  5. Step 5: Solve for x
    x = 2,021,129.10/1,710.97
  6. Step 6: Final answer
    x = 1,181.28

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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.