Home / 2,130.24-3,195.60-814.80

Finding the Fourth Proportional to 2,130.24, 3,195.60 and 814.80

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Solution

The fourth proportional to 2,130.24, 3,195.60 and 814.80 is: 1,222.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.24 : 3,195.60 = 814.80 : x
  2. Step 2: Convert to fraction form
    2,130.24/3,195.60 = 814.80/x
  3. Step 3: Cross multiply
    2,130.24x = 3,195.60 × 814.80
  4. Step 4: Simplify right side
    2,130.24x = 2,603,774.88
  5. Step 5: Solve for x
    x = 2,603,774.88/2,130.24
  6. Step 6: Final answer
    x = 1,222.29

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1.5x scale

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.