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Finding the Fourth Proportional to 1,787.91, 2,682.20 and 555.24

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Solution

The fourth proportional to 1,787.91, 2,682.20 and 555.24 is: 832.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.91 : 2,682.20 = 555.24 : x
  2. Step 2: Convert to fraction form
    1,787.91/2,682.20 = 555.24/x
  3. Step 3: Cross multiply
    1,787.91x = 2,682.20 × 555.24
  4. Step 4: Simplify right side
    1,787.91x = 1,489,261.95
  5. Step 5: Solve for x
    x = 1,489,261.95/1,787.91
  6. Step 6: Final answer
    x = 832.96

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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.