Home / 5,438.40-8,160.67-2,318.07

Finding the Fourth Proportional to 5,438.40, 8,160.67 and 2,318.07

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Solution

The fourth proportional to 5,438.40, 8,160.67 and 2,318.07 is: 3,478.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.40 : 8,160.67 = 2,318.07 : x
  2. Step 2: Convert to fraction form
    5,438.40/8,160.67 = 2,318.07/x
  3. Step 3: Cross multiply
    5,438.40x = 8,160.67 × 2,318.07
  4. Step 4: Simplify right side
    5,438.40x = 18,917,037.81
  5. Step 5: Solve for x
    x = 18,917,037.81/5,438.40
  6. Step 6: Final answer
    x = 3,478.42

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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.