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Finding the Fourth Proportional to 1,863.45, 2,793.33 and 692.58

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Solution

The fourth proportional to 1,863.45, 2,793.33 and 692.58 is: 1,038.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.45 : 2,793.33 = 692.58 : x
  2. Step 2: Convert to fraction form
    1,863.45/2,793.33 = 692.58/x
  3. Step 3: Cross multiply
    1,863.45x = 2,793.33 × 692.58
  4. Step 4: Simplify right side
    1,863.45x = 1,934,604.49
  5. Step 5: Solve for x
    x = 1,934,604.49/1,863.45
  6. Step 6: Final answer
    x = 1,038.18

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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.