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Finding the Fourth Proportional to 3,895.83, 5,375.70 and 2,216.70

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Solution

The fourth proportional to 3,895.83, 5,375.70 and 2,216.70 is: 3,058.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.83 : 5,375.70 = 2,216.70 : x
  2. Step 2: Convert to fraction form
    3,895.83/5,375.70 = 2,216.70/x
  3. Step 3: Cross multiply
    3,895.83x = 5,375.70 × 2,216.70
  4. Step 4: Simplify right side
    3,895.83x = 11,916,314.19
  5. Step 5: Solve for x
    x = 11,916,314.19/3,895.83
  6. Step 6: Final answer
    x = 3,058.74

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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.