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Finding the Fourth Proportional to 3,895, 5,374.90 and 2,126.27

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Solution

The fourth proportional to 3,895, 5,374.90 and 2,126.27 is: 2,934.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895 : 5,374.90 = 2,126.27 : x
  2. Step 2: Convert to fraction form
    3,895/5,374.90 = 2,126.27/x
  3. Step 3: Cross multiply
    3,895x = 5,374.90 × 2,126.27
  4. Step 4: Simplify right side
    3,895x = 11,428,488.62
  5. Step 5: Solve for x
    x = 11,428,488.62/3,895
  6. Step 6: Final answer
    x = 2,934.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.