Home / 8,005.28-12,000.62-3,620.34

Finding the Fourth Proportional to 8,005.28, 12,000.62 and 3,620.34

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Solution

The fourth proportional to 8,005.28, 12,000.62 and 3,620.34 is: 5,427.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,005.28 : 12,000.62 = 3,620.34 : x
  2. Step 2: Convert to fraction form
    8,005.28/12,000.62 = 3,620.34/x
  3. Step 3: Cross multiply
    8,005.28x = 12,000.62 × 3,620.34
  4. Step 4: Simplify right side
    8,005.28x = 43,446,306.51
  5. Step 5: Solve for x
    x = 43,446,306.51/8,005.28
  6. Step 6: Final answer
    x = 5,427.21

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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.