Home / 5,421.70-8,133.22-1,910.88

Finding the Fourth Proportional to 5,421.70, 8,133.22 and 1,910.88

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Solution

The fourth proportional to 5,421.70, 8,133.22 and 1,910.88 is: 2,866.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.70 : 8,133.22 = 1,910.88 : x
  2. Step 2: Convert to fraction form
    5,421.70/8,133.22 = 1,910.88/x
  3. Step 3: Cross multiply
    5,421.70x = 8,133.22 × 1,910.88
  4. Step 4: Simplify right side
    5,421.70x = 15,541,607.43
  5. Step 5: Solve for x
    x = 15,541,607.43/5,421.70
  6. Step 6: Final answer
    x = 2,866.56

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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.