Home / 5,221.30-7,832.10-1,325.70

Finding the Fourth Proportional to 5,221.30, 7,832.10 and 1,325.70

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Solution

The fourth proportional to 5,221.30, 7,832.10 and 1,325.70 is: 1,988.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,221.30 : 7,832.10 = 1,325.70 : x
  2. Step 2: Convert to fraction form
    5,221.30/7,832.10 = 1,325.70/x
  3. Step 3: Cross multiply
    5,221.30x = 7,832.10 × 1,325.70
  4. Step 4: Simplify right side
    5,221.30x = 10,383,014.97
  5. Step 5: Solve for x
    x = 10,383,014.97/5,221.30
  6. Step 6: Final answer
    x = 1,988.59

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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.