Home / 5,276.53-7,911.87-2,158.72

Finding the Fourth Proportional to 5,276.53, 7,911.87 and 2,158.72

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Solution

The fourth proportional to 5,276.53, 7,911.87 and 2,158.72 is: 3,236.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.53 : 7,911.87 = 2,158.72 : x
  2. Step 2: Convert to fraction form
    5,276.53/7,911.87 = 2,158.72/x
  3. Step 3: Cross multiply
    5,276.53x = 7,911.87 × 2,158.72
  4. Step 4: Simplify right side
    5,276.53x = 17,079,513.80
  5. Step 5: Solve for x
    x = 17,079,513.80/5,276.53
  6. Step 6: Final answer
    x = 3,236.89

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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.