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Finding the Fourth Proportional to 2,885.51, 4,321.98 and 1,787.55

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Solution

The fourth proportional to 2,885.51, 4,321.98 and 1,787.55 is: 2,677.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.51 : 4,321.98 = 1,787.55 : x
  2. Step 2: Convert to fraction form
    2,885.51/4,321.98 = 1,787.55/x
  3. Step 3: Cross multiply
    2,885.51x = 4,321.98 × 1,787.55
  4. Step 4: Simplify right side
    2,885.51x = 7,725,755.35
  5. Step 5: Solve for x
    x = 7,725,755.35/2,885.51
  6. Step 6: Final answer
    x = 2,677.44

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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.