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Finding the Fourth Proportional to 2,692.27, 4,038.40 and 744.47

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Solution

The fourth proportional to 2,692.27, 4,038.40 and 744.47 is: 1,116.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,692.27 : 4,038.40 = 744.47 : x
  2. Step 2: Convert to fraction form
    2,692.27/4,038.40 = 744.47/x
  3. Step 3: Cross multiply
    2,692.27x = 4,038.40 × 744.47
  4. Step 4: Simplify right side
    2,692.27x = 3,006,463.53
  5. Step 5: Solve for x
    x = 3,006,463.53/2,692.27
  6. Step 6: Final answer
    x = 1,116.70

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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.