Home / 3,871.95-5,341.55-2,379.32

Finding the Fourth Proportional to 3,871.95, 5,341.55 and 2,379.32

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Solution

The fourth proportional to 3,871.95, 5,341.55 and 2,379.32 is: 3,282.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.95 : 5,341.55 = 2,379.32 : x
  2. Step 2: Convert to fraction form
    3,871.95/5,341.55 = 2,379.32/x
  3. Step 3: Cross multiply
    3,871.95x = 5,341.55 × 2,379.32
  4. Step 4: Simplify right side
    3,871.95x = 12,709,268.22
  5. Step 5: Solve for x
    x = 12,709,268.22/3,871.95
  6. Step 6: Final answer
    x = 3,282.39

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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.