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Finding the Fourth Proportional to 1,787.94, 2,682.15 and 555.45

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Solution

The fourth proportional to 1,787.94, 2,682.15 and 555.45 is: 833.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.94 : 2,682.15 = 555.45 : x
  2. Step 2: Convert to fraction form
    1,787.94/2,682.15 = 555.45/x
  3. Step 3: Cross multiply
    1,787.94x = 2,682.15 × 555.45
  4. Step 4: Simplify right side
    1,787.94x = 1,489,786.81
  5. Step 5: Solve for x
    x = 1,489,786.81/1,787.94
  6. Step 6: Final answer
    x = 833.24

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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.