Home / 3,918.87-5,406.32-2,346.05

Finding the Fourth Proportional to 3,918.87, 5,406.32 and 2,346.05

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Solution

The fourth proportional to 3,918.87, 5,406.32 and 2,346.05 is: 3,236.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.87 : 5,406.32 = 2,346.05 : x
  2. Step 2: Convert to fraction form
    3,918.87/5,406.32 = 2,346.05/x
  3. Step 3: Cross multiply
    3,918.87x = 5,406.32 × 2,346.05
  4. Step 4: Simplify right side
    3,918.87x = 12,683,516.42
  5. Step 5: Solve for x
    x = 12,683,516.42/3,918.87
  6. Step 6: Final answer
    x = 3,236.52

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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.