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Finding the Fourth Proportional to 3,875.63, 5,362.45 and 3,379.30

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Solution

The fourth proportional to 3,875.63, 5,362.45 and 3,379.30 is: 4,675.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.63 : 5,362.45 = 3,379.30 : x
  2. Step 2: Convert to fraction form
    3,875.63/5,362.45 = 3,379.30/x
  3. Step 3: Cross multiply
    3,875.63x = 5,362.45 × 3,379.30
  4. Step 4: Simplify right side
    3,875.63x = 18,121,305.43
  5. Step 5: Solve for x
    x = 18,121,305.43/3,875.63
  6. Step 6: Final answer
    x = 4,675.71

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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.