Home / 2,114.20-3,171.24-653.26

Finding the Fourth Proportional to 2,114.20, 3,171.24 and 653.26

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Solution

The fourth proportional to 2,114.20, 3,171.24 and 653.26 is: 979.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,114.20 : 3,171.24 = 653.26 : x
  2. Step 2: Convert to fraction form
    2,114.20/3,171.24 = 653.26/x
  3. Step 3: Cross multiply
    2,114.20x = 3,171.24 × 653.26
  4. Step 4: Simplify right side
    2,114.20x = 2,071,644.24
  5. Step 5: Solve for x
    x = 2,071,644.24/2,114.20
  6. Step 6: Final answer
    x = 979.87

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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.