Home / 2,130.44-3,195.28-813.85

Finding the Fourth Proportional to 2,130.44, 3,195.28 and 813.85

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Solution

The fourth proportional to 2,130.44, 3,195.28 and 813.85 is: 1,220.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.44 : 3,195.28 = 813.85 : x
  2. Step 2: Convert to fraction form
    2,130.44/3,195.28 = 813.85/x
  3. Step 3: Cross multiply
    2,130.44x = 3,195.28 × 813.85
  4. Step 4: Simplify right side
    2,130.44x = 2,600,471.66
  5. Step 5: Solve for x
    x = 2,600,471.66/2,130.44
  6. Step 6: Final answer
    x = 1,220.63

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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.