Home / 5,135.28-7,704.12-1,672.80

Finding the Fourth Proportional to 5,135.28, 7,704.12 and 1,672.80

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Solution

The fourth proportional to 5,135.28, 7,704.12 and 1,672.80 is: 2,509.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.28 : 7,704.12 = 1,672.80 : x
  2. Step 2: Convert to fraction form
    5,135.28/7,704.12 = 1,672.80/x
  3. Step 3: Cross multiply
    5,135.28x = 7,704.12 × 1,672.80
  4. Step 4: Simplify right side
    5,135.28x = 12,887,451.94
  5. Step 5: Solve for x
    x = 12,887,451.94/5,135.28
  6. Step 6: Final answer
    x = 2,509.59

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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.