Home / 8,021.72-12,032.57-2,178.34

Finding the Fourth Proportional to 8,021.72, 12,032.57 and 2,178.34

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Solution

The fourth proportional to 8,021.72, 12,032.57 and 2,178.34 is: 3,267.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,021.72 : 12,032.57 = 2,178.34 : x
  2. Step 2: Convert to fraction form
    8,021.72/12,032.57 = 2,178.34/x
  3. Step 3: Cross multiply
    8,021.72x = 12,032.57 × 2,178.34
  4. Step 4: Simplify right side
    8,021.72x = 26,211,003.90
  5. Step 5: Solve for x
    x = 26,211,003.90/8,021.72
  6. Step 6: Final answer
    x = 3,267.50

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Half scale
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Double scale
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Similar ratio
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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.