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Finding the Fourth Proportional to 2,692.62, 4,038.90 and 744.75

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Solution

The fourth proportional to 2,692.62, 4,038.90 and 744.75 is: 1,117.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,692.62 : 4,038.90 = 744.75 : x
  2. Step 2: Convert to fraction form
    2,692.62/4,038.90 = 744.75/x
  3. Step 3: Cross multiply
    2,692.62x = 4,038.90 × 744.75
  4. Step 4: Simplify right side
    2,692.62x = 3,007,970.78
  5. Step 5: Solve for x
    x = 3,007,970.78/2,692.62
  6. Step 6: Final answer
    x = 1,117.12

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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.