Home / 3,438.81-5,157.12-1,359.36

Finding the Fourth Proportional to 3,438.81, 5,157.12 and 1,359.36

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Solution

The fourth proportional to 3,438.81, 5,157.12 and 1,359.36 is: 2,038.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.81 : 5,157.12 = 1,359.36 : x
  2. Step 2: Convert to fraction form
    3,438.81/5,157.12 = 1,359.36/x
  3. Step 3: Cross multiply
    3,438.81x = 5,157.12 × 1,359.36
  4. Step 4: Simplify right side
    3,438.81x = 7,010,382.64
  5. Step 5: Solve for x
    x = 7,010,382.64/3,438.81
  6. Step 6: Final answer
    x = 2,038.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.