Home / 5,438.25-8,153.64-2,151.72

Finding the Fourth Proportional to 5,438.25, 8,153.64 and 2,151.72

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Solution

The fourth proportional to 5,438.25, 8,153.64 and 2,151.72 is: 3,226.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.25 : 8,153.64 = 2,151.72 : x
  2. Step 2: Convert to fraction form
    5,438.25/8,153.64 = 2,151.72/x
  3. Step 3: Cross multiply
    5,438.25x = 8,153.64 × 2,151.72
  4. Step 4: Simplify right side
    5,438.25x = 17,544,350.26
  5. Step 5: Solve for x
    x = 17,544,350.26/5,438.25
  6. Step 6: Final answer
    x = 3,226.10

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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.