Home / 2,115.52-3,173.40-654.80

Finding the Fourth Proportional to 2,115.52, 3,173.40 and 654.80

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Solution

The fourth proportional to 2,115.52, 3,173.40 and 654.80 is: 982.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.52 : 3,173.40 = 654.80 : x
  2. Step 2: Convert to fraction form
    2,115.52/3,173.40 = 654.80/x
  3. Step 3: Cross multiply
    2,115.52x = 3,173.40 × 654.80
  4. Step 4: Simplify right side
    2,115.52x = 2,077,942.32
  5. Step 5: Solve for x
    x = 2,077,942.32/2,115.52
  6. Step 6: Final answer
    x = 982.24

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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.